module 06. materials & hardware

8/12/2019 Module 06. Materials & Hardware

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EASA Part 66 : Material Question

Module 06. Materials & Hardware

01a. Aircraft Materials - Ferrous.

Question Number. 1. When drilling stainless steel, use a.Option A. drill ground to 1! ", slo# $utting speed.Option %. drill ground to &! ", 'ast $utting speed.Option (. drill ground to &! ", slo# $utting speed.(orre$t Ans#er is. drill ground to 1! ", slo# $utting speed.E)planation. N*+.

Question Number. . o# is a material gal-anised.Option A. Spra/ed #ith ni$0el solution.Option %. Pa$0ed in a drum $ontaining in$ dust and heated.Option (. 2ipped in a bath o' molten in$.(orre$t Ans#er is. 2ipped in a bath o' molten in$.E)planation. N*+.

Question Number. 3. What temperature #ould steel be tempered at.Option A. At the annealing temperature.Option %. Abo-e the annealing temperature.Option (. %elo# the annealing temperature.(orre$t Ans#er is. %elo# the annealing temperature.E)planation. N*+.

Question Number. 4. 5empering steel gi-es.Option A. greater brittleness.Option %. greater hardness.Option (. relie' o' internal stress a'ter hardening.(orre$t Ans#er is. relie' o' internal stress a'ter hardening.E)planation. 5empering is done to relie-e internal stresses.

Question Number. . 5he addition o' $hromium to steel #ill produ$e.Option A. toughness.Option %. hardness.

Option (. du$tilit/.(orre$t Ans#er is. hardness.E)planation. (hromium is allo/ed #ith steel to ma0e it harder.

Question Number. 6. (hromium added to plain $arbon steel.Option A. in$reases it7s resistan$e to $orrosion.Option %. turns it into a non8'errous allo/.Option (. ma0es the metal so'ter.(orre$t Ans#er is. in$reases it7s resistan$e to $orrosion.E)planation. (hromium, #hen added to steel in$reases its hardness and $orrosion resistan$e9hen$e (S;.

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Option %. redu$e the $arbon in the steel.Option (. introdu$e $arbon into the steel.(orre$t Ans#er is. produ$e a hard $ase o-er a tough $ore.E)planation. (ase hardening hardens the sur'a$e onl/.

Question Number. =. At normal temperatures ( steel is harder be$ause.Option A. it has more austenite.Option %. o' the > o' $arbon in the granules.Option (. it has less austenite.(orre$t Ans#er is. o' the > o' $arbon in the granules.E)planation. N*+.

Question Number. &. Nitriding is.Option A. tempering.Option %. anodising.Option (. $ase hardening.(orre$t Ans#er is. $ase hardening.

E)planation. Nitriding is a 'orm o' $ase hardening.

Question Number. 1!. Medium $arbon steels ha-e a $arbon $ontent o'.Option A. !.3 8 !. >.Option %. !. 8 !.= >.Option (. !.= 8 1.! >.(orre$t Ans#er is. !.3 8 !. >.E)planation. Medium $arbon steel is !.3 8 !.6> 9appro);. ?AA A(43 481.

Question Number. 11. A 'errous metal $ontains.Option A. aluminium.

Option %. iron.Option (. magnesium.(orre$t Ans#er is. iron.E)planation. ?errous7 is 'rom the +atin 'or iron.

Question Number. 1. With respe$t to 'errous metals #hi$h o' the 'ollo#ing istrue.Option A. *ron is not an/ element o' 'errous metals.Option %. *ron is a main element and most 'errous metal are magneti$.Option (. *ron is a main element and 'errous metals are not magneti$.(orre$t Ans#er is. *ron is a main element and most 'errous metal are magneti$.E)planation. 5he +atin 'or iron is 7?errum7 ?errous metals are named thus, and most are

paramagneti$ #ith the e)$eption o' some stainless steels.

Question Number. 13. 5he annealing pro$ess on steel is re@uired sometimes as it.Option A. pro-ides a $orrosion resistant la/er that pre-ents o)idation.Option %. allo#s the material a greater stress per unit area.Option (. relie-es internal stress su''ered a'ter engineering pro$esses.(orre$t Ans#er is. relie-es internal stress su''ered a'ter engineering pro$esses.E)planation. Annealing is to relie-e internal stresses.

Question Number. 14. (obalt steel tested on the %rinell test #ould ha-e a %N numberbet#een.

Option A. 1!! to 1


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Option (. 6!! to

Question Number. 1. *' a material is 'ound to be in the tertiar/ phase o' $reep the 'ollo#ingpro$edure should be implemented:.Option A. 5he $omponent should under go d/e penetrant pro$ess and $ondition monitored.Option %. 5he $ra$0 should be stop drill, $ondition monitoring should be applied.Option (. 5he $omponent should be repla$ed immediatel/.(orre$t Ans#er is. 5he $omponent should be repla$ed immediatel/.E)planation. 5he tertiar/ phase o' $reep o$$urs Bust be'ore $omplete 'ailure o' the $omponent.%+1!83 3.11.3.

Question Number. 16. What is used 'or mar0ing out steels.Option A. Engineers blue.Option %. Wa) $ra/on.

Option (. (opper sulphate.(orre$t Ans#er is. (opper sulphate.E)planation. (opper sulphate is used 'or mar0ing steel. Wor0shop 5e$hnolog/ Part 1 Pg !&.

Question Number. 1


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Option A. EM*.Option %. EM(.Option (. 2egaussing.(orre$t Ans#er is. 2egaussing.E)planation. 2egaussing is another name 'or demagnetising.

Question Number. . 5he hardness o' steel depends upon.Option A. 'ormation o' pearlite into austenite.Option %. 'ormation o' $ementite.Option (. the iron austenite grain stru$ture.(orre$t Ans#er is. 'ormation o' $ementite.E)planation. (ementite 9iron $arbide; is the hard grain stru$ture that pre$ipitates 'rom the austeniteas high $arbon steel $ools 'rom abo-e the C(5.

Question Number. 3. 5he di''eren$e bet#een annealing and normaliing is.Option A. both are heated abo-e the C(5, $ool slo#l/ to anneal, $ool in air to normalie.Option %. both are heated belo# the C(5, $ool in air to anneal, $ool slo#l/ to normalie.

Option (. both are heated abo-e the C(5, $ool in air to anneal, $ool slo#l/ to normalie.(orre$t Ans#er is. both are heated abo-e the C(5, $ool slo#l/ to anneal, $ool in air tonormalie.E)planation. %oth are heated abo-e the C(5, but the onl/ di''eren$e is, $ool slo#l/ 9in the 'urna$e;to anneal, $ool in air to normalie.

Question Number. 4. Normaliing o' steel is done to.Option A. remo-e residual stress o' the manu'a$turing pro$ess.Option %. ma0e steel so'ter.Option (. restore the 'atigue li'e o' steel.(orre$t Ans#er is. remo-e residual stress o' the manu'a$turing pro$ess.E)planation. N*+.

Question Number. . When normalising, the material is.Option A. @uen$hed immediatel/.Option %. le't to $ool in room temperature.Option (. $ooled slo#l/.(orre$t Ans#er is. le't to $ool in room temperature.E)planation. (ool in air #hen normalising.

Question Number. 6. (ast iron is.Option A. -er/ malleable.Option %. tough.

Option (. hea-/ and brittle.(orre$t Ans#er is. hea-/ and brittle.E)planation. N*+.

Question Number.


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Option A. sur'a$e $orrosion.Option %. 'ili'orm $orrosion.Option (. intergranular $orrosion.(orre$t Ans#er is. intergranular $orrosion.E)planation. N*+.

Question Number. &. When metal is 'irst heated slightl/ abo-e its $riti$al temperature andthen $ooled rapidl/ it is $ommon that the metal #ill in$rease in.Option A. brittleness.Option %. both o' the abo-e.Option (. hardness.(orre$t Ans#er is. both o' the abo-e.E)planation. 5his is the pro$ess o' hardening 9'errous; metals.

Question Number. 3!. Steel is tempered.Option A. a'ter hardening.Option %. be'ore hardening.

Option (. to in$rease hardening.(orre$t Ans#er is. a'ter hardening.E)planation. 5empering is to redu$e the brittleness $aused b/ hardening.

Question Number. 31. *' a steel $omponent is operated belo# the 'atigue limit. 5he 'atigue li'eis.Option A. 'inite.Option %. in'inite.Option (. depend on its proo' stress.(orre$t Ans#er is. in'inite.E)planation. N*+. http:metals.about.$omlibrar/blde'8?atigue8+imit.htm

Question Number. 3. A lo# $arbon steel #ould normall/ be $ase hardened using.Option A. the nitriding pro$ess.Option %. 'lame or indu$tion hardening.Option (. pa$0 or gas $arburising.(orre$t Ans#er is. pa$0 or gas $arburising.E)planation. N*+. http:###.e'unda.$ompro$essesheatDtreathardeningdi''usion.$'m

Question Number. 33. A'ter a produ$t has been manu'a$tured and all heat treatment has been$arried out the stress remaining i' an/ is termed as.Option A. residual stress.Option %. #or0ing stress.

Option (. applied stress.(orre$t Ans#er is. residual stress.E)planation. N*+. http:###.ph/si@ueindustrie.$omresidualDstress.php

Question Number. 34. Annealing steels.Option A. toughens the metal.Option %. ma0es the metal malleable.Option (. ma0es the metal brittle.(orre$t Ans#er is. ma0es the metal malleable.E)planation. AP 5e$hni$ian Feneral 5e)tboo0 (hap < page 3.

Question Number. 3. 5empering o' hardened steel is $arried out to.Option A. retain sur'a$e hardness, but so'ten the $ore.


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Option %. retain $ore hardness, but so'ten the sur'a$e.Option (. signi'i$antl/ redu$e the brittleness #ithout su''ering a maBor drop in its strength.(orre$t Ans#er is. signi'i$antl/ redu$e the brittleness #ithout su''ering a maBor drop in itsstrength.E)planation. N*+.

Question Number. 36. igh speed steel relies hea-il/ on the 'ollo#ing metalli$ element 'or itsabilit/ to $ut other metals, e-en #hen it is heated to a dull red $olour.Option A. 5ungsten.Option %. Ni$0el.Option (. Ganadium.(orre$t Ans#er is. 5ungsten.E)planation. N*+.

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Option (. belo# the Cpper (riti$al Point.(orre$t Ans#er is. abo-e the Cpper (riti$al Point.E)planation. N*+.

Question Number. 43. Steel is produ$ed b/ re'ining pig iron #here airo)/gen is blo#n through

the molten material to remo-e.Option A. $arbon.Option %. o)ides.Option (. sulphur.(orre$t Ans#er is. $arbon.E)planation. Air is to 7de$arburise7 the pig iron. http:###.bsu.edu#eba$maasselsteel.html

Question Number. 44. 2uring a o$0#ell ardness test, #hat dimension ismeasured.Option A. 5he diameter o' the indent.Option %. 5he depth o' the indent.Option (. 5he diameter and depth o' the indent.

(orre$t Ans#er is. 5he depth o' the indent.E)planation. N*+. http:###.@$plus.$o.u0trainingtraining8ro$0#ell.htm

Question Number. 4. What does the ! in !4853 mean.Option A. 5he per$entage o' impurities in the allo/.Option %. 5he allo/ has not been modi'ied.Option (. 5he allo/ has been modi'ied.(orre$t Ans#er is. 5he allo/ has not been modi'ied.E)planation. N*+. http:###.BBBtrain.$om-msengineeringDmetalDstds.htmlH6

Question Number. 46. *n most air$ra't h/drauli$ s/stems, t#o8pie$e tube $onne$tors

$onsisting o' a slee-e and a nut are used #hen a tubing 'lare is re@uired. 5he use o' this t/pe o'$onne$tor eliminates.Option A. the 'laring operation prior to assembl/.Option %. the possibilit/ o' redu$ing the 'lare thi$0ness b/ #iping or ironing during the tighteningpro$ess.Option (. #ren$h damage to the tubing during the tightening pro$ess.(orre$t Ans#er is. the possibilit/ o' redu$ing the 'lare thi$0ness b/ #iping or ironing during thetightening pro$ess.E)planation. With the t#o8pie$e 'itting 9AN=1=; there is no relati-e motion bet#een the 'itting andthe 'lare #hen the nut is being tightened.

01b. Aircraft Materials - Ferrous.

Question Number. 1. *n the tensile strength test.Option A. the material is pulled to limit o' elasti$it/.Option %. the material is pulled to until it brea0s.Option (. the material is pulled until it rea$hes its C5S.(orre$t Ans#er is. the material is pulled to until it brea0s.E)planation. 5he material is tested to 'ull destru$tions.

Question Number. . *mpa$t resistan$e measures the.Option A. material toughness.Option %. material hardness.Option (. material du$tilit/.

(orre$t Ans#er is. material toughness.E)planation. 5oughness7 is resistan$e to impa$t.


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Question Number. 3. Spe$i'ied time o' $onta$t bet#een the indentor and test pie$e in a-i$0ers or brinell hardness test is.Option A. ! se$onds.Option %. 1! se$onds.

Option (. 1 se$onds.(orre$t Ans#er is. 1 se$onds.E)planation. (A*Ps %+1!83 ..=.

Question Number. 4. *n an *od impa$t test the stri0ing energ/ o' the stri0er isappro)imatel/.Option A. 1! I.Option %. 163 I.Option (. 3!! I.(orre$t Ans#er is. 163 I.E)planation. (A*Ps %+1!83 6..

Question Number. . 5he (harp/ test measures.Option A. strain.Option %. impa$t energ/.Option (. Joung7s modulus.(orre$t Ans#er is. impa$t energ/.E)planation. N*+.

Question Number. 6. 5he 7?atigue limit7 'or steel is generall/ in the region o', $ompared to thestati$ C.5.S.Option A. 4!>86!>.Option %. 6!>8=!>.

Option (. !>84!>.(orre$t Ans#er is. !>84!>.E)planation. N*+. http:###.0e/8to8steel.$omArti$lesArt13


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E)planation. N*+. http:###8materials.eng.$am.a$.u0mpsitepropertiesnon8*Etoughness.html

Question Number. 1!. Whi$h o' the 'olllo#ing are all hardness testing ma$hines.Option A. o$0#ell, %rinell and *od.Option %. o$0#ell, Gi$0ers and *od.

Option (. o$0#ell, %rinell and Gi$0ers.(orre$t Ans#er is. o$0#ell, %rinell and Gi$0ers.E)planation. Standard A-iation Maintenan$e andboo0 Page 4811.

02a. Aircraft Materials - Non-Ferrous.

Question Number. 1. 5he most suitable mi)ture 'or a salt bath operation is.Option A. !> nitrate o' soda and =!> sodium nitrate.Option %. &!> nitrate o' soda and 1!> sodium nitrate.Option (. sodium $hlorate and 3!> sodium nitrate.(orre$t Ans#er is. &!> nitrate o' soda and 1!> sodium nitrate.E)planation. %+&81 1.

Question Number. . o# man/ times $an $lad allo/ be heat treated.Option A. On$e onl/.Option %. 3 times.Option (. as man/ times as re@uired.(orre$t Ans#er is. 3 times.E)planation. N*+.

Question Number. 3. 5he s/mbol 7W7 on a material indi$ates.Option A. it is 'or use on air$ra't mainplanes onl/.Option %. it has been solution treated and #ill respond e''e$ti-el/ to pre$ipitation treatment.

Option (. it is 'or #or0shop use onl/.(orre$t Ans#er is. it has been solution treated and #ill respond e''e$ti-el/ to pre$ipitationtreatment.E)planation. N*+.

Question Number. 4. ?or a parti$ular metal material, #hat $onditions are best to minimise$reep.Option A. +o# stress, lo# temperature.Option %. +o# stress, high temperature.Option (. igh stress, lo# temperature.(orre$t Ans#er is. +o# stress, lo# temperature.E)planation. N*+.

Question Number. . What is the e''e$t o' pre$ipitation heat treatment onaluminium.Option A. *t speeds up age hardening pro$ess.Option %. *t dela/s the age hardening pro$ess.Option (. *t so'tens the material to allo# it to be #or0ed.(orre$t Ans#er is. *t speeds up age hardening pro$ess.E)planation. N*+.

Question Number. 6. Aluminium e)posed to air #ill.Option A. o)idise and be$ome #ea0er.

Option %. o)idise and be$ome ele$tri$all/ insulated.Option (. o)idise and be$ome stronger.


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Question Number. 14. Pre$ipitation treating ma0es the metal.Option A. Pre$ipitation treating ma0es the metal.Option %. less strong and hard.Option (. harder, stronger and less du$tile.

(orre$t Ans#er is. harder, stronger and less du$tile.E)planation. N*+.

Question Number. 1. A material has the $ode !4856 on it. Whi$h part o' the $odeindi$ates the per$entage o' the allo/ing element.Option A. .Option %. !.Option (. 6.(orre$t Ans#er is. !.E)planation. N*+.

Question Number. 16. Aluminium allo/ed primaril/ #ith magnesium is numbered.Option A. !.Option %. !.Option (. 1!.(orre$t Ans#er is. !.E)planation. N*+.

Question Number. 1 Aluminium 13 > Sili$on. http:###.glue8it.$ommodel8engineeringgeneral8in'ormationglossar/aDsumm.htm

Question Number. !. Air$ra't s0in is Boggled to.Option A. pro-ide smooth air'lo# at 'a/ing sur'a$es.Option %. ma0e a 'rame lighter but stronger.Option (. $on'orm to the air$ra't $ontour.

(orre$t Ans#er is. pro-ide smooth air'lo# at 'a/ing sur'a$es.E)planation. A Boggle ma0es a 'lush sur'a$e at a Boin.


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Question Number. 1. 5he %ritish s/stem o' heat treatment $odes is.Option A. a series o' letters.Option %. numbers and letters.Option (. a series o' numbers.

(orre$t Ans#er is. a series o' letters.E)planation. (A*P %+&81.

Question Number. . *n a sheet metal store the 'ollo#ing is mar0ed on a sheet o' aluminiumallo/: +16 9sheet 1;. , On a di''erent sheet the 'ollo#ing mar0ing is 'ound: +1 o' allo/ thi$0ness.Option (. > o' allo/ thi$0ness.(orre$t Ans#er is. > o' allo/ thi$0ness.E)planation. 5he $ladding is > ea$h side.

Question Number. 6. 5he main metal in monel is.Option A. aluminium.Option %. ni$0el.Option (. stainless steel.(orre$t Ans#er is. ni$0el.E)planation. Monel is a ni$0el allo/.

Question Number.


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Question Number. =. Wh/ is ni$0el $hromium used in man/ e)haust s/stems.Option A. (orrosion resistant and high heat $ondu$ti-it/.Option %. +ight#eight and 'le)ible.Option (. (orrosion resistant and lo# e)pansion $oe''i$ient.

(orre$t Ans#er is. (orrosion resistant and lo# e)pansion $oe''i$ient.E)planation. Ni$0el and $hromium are the allo/ing elements in Stainless Steel.

Question Number. &. 5itanium allo/s.Option A. are $heap to manu'a$ture.Option %. ha-e a high strength to #eight ratio.Option (. are $orrosion resistant but hea-/.(orre$t Ans#er is. ha-e a high strength to #eight ratio.E)planation. N*+.

Question Number. 3!. Whi$h part o' the !1


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Question Number. 3. 5he time bet#een remo-al 'rom heat treatment 'urna$e and @uen$hingmust be not more than.Option A. 3 se$onds.Option %. 1! se$onds.

Option (. < se$onds.(orre$t Ans#er is. 1! se$onds.E)planation. Ieppesen AP 5e$hni$ian Air'rame 5e)tboo0 Page 8&.

Question Number. 36. When bu''ing sur'a$e o' Aluminium Allo/, #hat material are /ouremo-ing.Option A. O)ide la/er.Option %. Aluminium.Option (. Allo/.(orre$t Ans#er is. O)ide la/er.E)planation. Polishing al.allo/, pure al. or Al$lad, /ou #ould be remo-ing the o)ide la/er.

Question Number. 3 aluminium allo/. 5he 'a$t that itis $lad is irrele-ant.

Question Number. 3=. Wh/ are aluminium allo/s used on air$ra't, instead o' purealuminium.Option A. Stronger.

Option %. (orrosion resistant.Option (. +ighter.(orre$t Ans#er is. Stronger.E)planation. N*+.

Question Number. 3&. 5he magnesium allo/s used in air$ra't $an be re$ogniedb/.Option A. shin/ sur'a$e due to $hromium plated on the sur'a$e.Option %. /ello#ish sur'a$e due to prote$ti-e treatment.Option (. sil-er sur'a$e due to prote$ti-e $oating.(orre$t Ans#er is. /ello#ish sur'a$e due to prote$ti-e treatment.E)planation. N*+.

Question Number. 4!. Age hardening o' aluminium is.Option A. ne-er $arried out.Option %. a gradual hardening o-er a period o' time.Option (. not ne$essar/.(orre$t Ans#er is. ne-er $arried out.E)planation. Aluminium #ill not age harden li0e aluminium allo/s su$h as dural as there ars noallo/ing elements su$h as $opper that #ill $ome out o' solution o-er time.

Question Number. 41. Al$lad is.Option A. aluminium #ith duralumin $ladding.

Option %. duralumin #ith aluminium $oating.Option (. duralumin #ith magnesium $ladding.


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(orre$t Ans#er is. duralumin #ith aluminium $oating.E)planation. N*+.

Question Number. 4. 5he o)ide 'ilm on the sur'a$e o' aluminium is.Option A. hard and porous.

Option %. porous.Option (. non porous.(orre$t Ans#er is. non porous.E)planation. N*+.

Question Number. 43. 5he pro$ess o' 'orming a pure la/er o' aluminium o-er an aluminiumallo/ is.Option A. metaliing.Option %. $ladding.Option (. ele$troplating.(orre$t Ans#er is. $ladding.E)planation. N*+.

Question Number. 44. 5itanium $an be identi'ied b/ pla$ing it on a grinding #heel and loo0ing'or.Option A. ed Spar0s.Option %. Jello# Spar0s.Option (. White Spar0s.(orre$t Ans#er is. White Spar0s.E)planation. N*+.

Question Number. 4. 5he $riti$al pro$ess o' heat treatment is.Option A. temperature, method o' heating and $ooling.

Option %. temperature and method o' heating onl/.Option (. method o' heating onl/.(orre$t Ans#er is. temperature, method o' heating and $ooling.E)planation. N*+.

Question Number. 46. e8treatment o' aluminium allo/s $an be per'ormed b/.Option A. alo$rom treatment.Option %. brushing on phosphate treatment 'ollo#ed b/ paint.Option (. selenious a$id treatment.(orre$t Ans#er is. alo$rom treatment.E)planation. N*+.

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Question Number. 4&. *' a material has to undergo deep $old 'orming operation. 5he essentialpropert/ #ould be.Option A. du$tilit/.Option %. malleabilit/.

Option (. elasti$it/.(orre$t Ans#er is. malleabilit/.E)planation. N*+.

Question Number. !. 5he metal #hi$h must not be heated in a salt bath is.Option A. magnesium allo/.Option %. duralumin.Option (. ri-ets made o' al$lad.(orre$t Ans#er is. magnesium allo/.E)planation. N*+.

Question Number. 1. 5he $olour $ode on sheet metal indi$ates.Option A. onl/ the spe$i'i$ation o' the material.Option %. the spe$ and gauge o' the material.Option (. that the material is 'rom an appro-ed sour$e.(orre$t Ans#er is. that the material is 'rom an appro-ed sour$e. O onl/ the spe$i'i$ation o' thematerial.E)planation. N*+.

Question Number. . When t#o or more metalli$ materials are 'used together, the$ombination is 0no#n as.Option A. a $omposite material.Option %. a thermosetting $ompound.

Option (. an allo/.(orre$t Ans#er is. an allo/.E)planation. ?use means 7to melt7.

Question Number. 3. Malleable materials are normall/.Option A. also highl/ du$tile.Option %. eas/ to $ast.Option (. easil/ 'orged.(orre$t Ans#er is. easil/ 'orged.E)planation. N*+.

Question Number. 4. 5he $ommon bonding material 'or 5ungsten (arbide is.Option A. *n-ar.Option %. (obalt.Option (. Sili$on.(orre$t Ans#er is. (obalt.E)planation. (obalt is used to bond tungsten $arbide to $utting tools.

Question Number. . Frain sie #ill e''e$t the me$hani$al properties o' metal. Whi$h o' the'ollo#ing is true.Option A. +arge grain sie is attributed to slo# $ooling rates and #ill gi-e less tensilestrength.Option %. Materials #ith large grain sie are more prone to $reep.

Option (. Small grain sie is normall/ attributed to rapid $ooling rates and #ill gi-e less tensilestrength.


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(orre$t Ans#er is. +arge grain sie is attributed to slo# $ooling rates and #ill gi-e less tensilestrength.E)planation. N*+.

Question Number. 6. 5he $ra$0ing o' stru$tural members under repeated stress lo#er than

the ultimate tensile load is 0no#n as.Option A. $reep.Option %. 'atigue 'ailure.Option (. stress re-ersal.(orre$t Ans#er is. 'atigue 'ailure.E)planation. N*+.

Question Number. (hromium and 33> (opper.Option %. 66> (opper and 33> Ni$0el.Option (. 66> Ni$0el and 33> (opper.(orre$t Ans#er is. 66> (hromium and 33> (opper.E)planation. N*+. http:###.lennte$h.$omMonel.htm

Question Number. 6. Sil-er solder is $omposed o' the materials.


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Option A. (opper, 5in and Sil-er.Option %. Kin$, +ead and Sil-er.Option (. (opper, Kin$ and Sil-er.(orre$t Ans#er is. (opper, Kin$ and Sil-er.E)planation. N*+. http:aBh80ni-es.$omsoldering.html

Question Number. 63. 5he ease #ith #hi$h a material $an be 'orged, rolled and e)truded#ithout 'ra$ture is an indi$ation o' a material7s.Option A. malleabilit/.Option %. du$tilit/.Option (. brittleness.(orre$t Ans#er is. malleabilit/.E)planation. N*+.

Question Number. 64. What is 'atigue.Option A. (/$li$ stressing o' a part.Option %. ?ailure o' a $omponent due to $orrosion.

Option (. (onstant stressing o' a part.(orre$t Ans#er is. (/$li$ stressing o' a part.E)planation. N*+.

Question Number. 6. Wh/ is stop drilling $arried out at the end o' a $ra$0.Option A. 5o $hange the dire$tion o' the $ra$0.Option %. 5o stop the $ra$0 'rom propagating.Option (. 5o in$rease the stress $on$entration at the $ra$0 end.(orre$t Ans#er is. 5o stop the $ra$0 'rom propagating.E)planation. N*+.

Question Number. 66. Annealing o' aluminium.Option A. in$reases the tensile strength.Option %. ma0es the material brittle.Option (. remo-es stresses $aused b/ 'orming.(orre$t Ans#er is. remo-es stresses $aused b/ 'orming.E)planation. N*+.

02b. Aircraft Materials - Non-Ferrous.

Question Number. 1. *n the %rinell hardness test, /ou #ould measure theindentation7s.Option A. depth.

Option %. area.Option (. diameter.(orre$t Ans#er is. diameter.E)planation. *n a %rinell hardness test, the diameter o' the indent is used to indi$ate thehardness.

Question Number. . 5he impa$t testing te$hni@ue is used on a material to test'or.Option A. hardness.Option %. toughness.Option (. shear strain.(orre$t Ans#er is. toughness.

E)planation. 5he impa$t test ma$hine measures resistan$e to impa$t 9i.e. toughness;. %+1!83.


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Question Number. 3. An S8N $ur-e is use'ul in the design e-aluation pro$ess 'ortesting.Option A. 'atigue li'e.Option %. shear 'or$e.Option (. tension.

(orre$t Ans#er is. 'atigue li'e.E)planation. An SN $ur-e is to e-aluate a material 'or 'atigue. SLstress le-el NLnumber $/$les to'ailure.

Question Number. 4. What is a 'usible material.Option A. 5he abilit/ o' t#o dissimilar metals to melt together.Option %. 5he abilit/ o' a metal to melt.Option (. 5he abilit/ o' a metal to be #elded.(orre$t Ans#er is. 5he abilit/ o' a metal to melt.E)planation. ?use7 simpl/ means to melt.

Question Number. . %rittleness is.Option A. the propert/ to resist #ear.Option %. the propert/ to not de'orm be'ore $ra$0ing.Option (. the propert/ to resist de'ormation.(orre$t Ans#er is. the propert/ to not de'orm be'ore $ra$0ing.E)planation. N*+.

Question Number. 6. 5he proo' stress o' a material is the stress at #hi$h.Option A. the material /ields.Option %. small amount o' permanent set ta0es pla$e.Option (. ne$0ing o' the material begins.(orre$t Ans#er is. small amount o' permanent set ta0es pla$e.

E)planation. N*+.

Question Number.


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Question Number. 1!. 5he -alue o' stress 'or a gi-en material $an be deri-ed b/.Option A. (ross se$tional area +oad.Option %. +oad (ross se$tional area.Option (. +oad (ross se$tional area.(orre$t Ans#er is. +oad (ross se$tional area.E)planation. N*+.

Question Number. 11. A material7s /ield strength is the abilit/ to.Option A. #ithstand a $rushing 'or$e.Option %. resist side loads.Option (. resist de'ormation.(orre$t Ans#er is. resist de'ormation.E)planation. N*+.

Question Number. 1. What t/pe o' a test in-ol-es stret$hing material until itbrea0s.Option A. ?atigue 5esting.

Option %. ardness 5esting.Option (. 5ensile 5esting.(orre$t Ans#er is. 5ensile 5esting.E)planation. N*+. http:###8materials.eng.$am.a$.u0mpsitepropertiesnon8*Estrength.html

03.1a. Aircraft Materials - Comosite and Non-Metallic ot!er t!an wood and fabric.

Question Number. 1. Adhesi-es $ontaining phenol8'ormaldeh/de, to $ure,[email protected] A. room temperature.Option %. high temperature.Option (. lo# temperature.

(orre$t Ans#er is. high temperature.E)planation. N*+.

Question Number. . 5#o parts o' the adhesi-e pro$ess are.Option A. #etting and gripping.Option %. spreading and setting.Option (. #etting and setting.(orre$t Ans#er is. #etting and setting.E)planation. N*+.

Question Number. 3. 5/pes o' adhesi-e Boints are.

Option A. me$hani$al and $emented.Option %. $emented and spe$i'i$.Option (. me$hani$al and spe$i'i$.(orre$t Ans#er is. me$hani$al and spe$i'i$.E)planation. N*+.

Question Number. 4. What material #ould be used #here a high temperature appli$ation isre@uired, e.g. a 'ire#all.Option A. Aramid 9e-lar; 'ibres.Option %. (arbongraphite 'ibres.Option (. (erami$ 'ibres.(orre$t Ans#er is. (erami$ 'ibres.

E)planation. (erami$ $omposites retain their strength at high temperatures.


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Question Number. . O-er e)tended hone/$omb $an bend in #hi$h dire$tion.Option A. *n all dire$tions.Option %. A$ross the ribbon.Option (. Along the ribbon.(orre$t Ans#er is. Along the ribbon.

E)planation. N*+.

Question Number. 6. ?ibre #ea-e strength is greatest in the dire$tion o' the.Option A. #e't.Option %. #arp.Option (. bias.(orre$t Ans#er is. #arp.E)planation. See Ieppesen Ad-an$ed (omposites.

Question Number.


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Question Number. 1. A $omposite 'lap panel has stru$tural damage. What N25 method #ill/ou use to dete$t.Option A. igh -oltage )8ra/.Option %. +o# -oltage )8ra/.Option (. (oin tap test.(orre$t Ans#er is. (oin tap test.

E)planation. N*+.

Question Number. 13. Sound is best absorbed b/ a material #hi$h is.Option A. dense.Option %. so't and porous.Option (. hard.(orre$t Ans#er is. so't and porous.E)planation. (ellular7 materials ma0e good sound insulation. Sound is una''e$ted b/ densit/, norhardness.

Question Number. 14. 5he ma)imum tensile strength o' 'ibre rein'or$ed plasti$ is a$hie-ed

using.Option A. 'ibres uni'orml/ distributed at 4 degrees to ea$h other.Option %. unidire$tional 'ibres.Option (. $hopped strand mat.(orre$t Ans#er is. unidire$tional 'ibres.E)planation. N*+.

Question Number. 1. Pol/ester resin and glass 'ibre $loth, be$omes.Option A. P5?E.Option %. PG(.Option (. FP.(orre$t Ans#er is. FP.

E)planation. N*+.

Question Number. 16. A thermoplasti$ $an be.Option A. heated and 'ormed onl/ on$e.Option %. is not a''e$ted b/ e-en lo# temperatures.Option (. $an be reheated and re'ormed more than on$e.(orre$t Ans#er is. $an be reheated and re'ormed more than on$e.E)planation. N*+.

Question Number. 1


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E)planation. N*+.

Question Number. 1&. A $ategor/ o' plasti$ material that is $apable o' so'tening or 'lo#ing#hen reheated is des$ribed as a.Option A. thermoset.

Option %. thermoplasti$.Option (. thermo$ure.(orre$t Ans#er is. thermoplasti$.E)planation. N*+.

Question Number. !. 5he $lassi'i$ation o' high tensile strength 'ibreglass used in air$ra'tstru$tures is.Option A. F8glass.Option %. E8glass.Option (. S8glass.(orre$t Ans#er is. S8glass.E)planation. N*+.

Question Number. 1. Whi$h is the identi'/ing $hara$teristi$ o' a$r/li$ plasti$s.Option A. A$etone #ill so'ten the plasti$, but #ill not $hange its $olour.Option %. as a /ello#ish tint #hen -ie#ed 'rom the edge.Option (. Kin$ $hloride #ill ha-e no e''e$t.(orre$t Ans#er is. Kin$ $hloride #ill ha-e no e''e$t.E)planation. N*+.

Question Number. . 5he $lassi'i$ation 'or 'ibreglass rein'or$ement material that is highresisti-it/ and the most $ommon is.Option A. E8glass.

Option %. S8glass.Option (. F8glass.(orre$t Ans#er is. E8glass.E)planation. N*+.

Question Number. 3. (omposite 'abri$ material is $onsidered to be the strongest in #hatdire$tion.Option A. Warp.Option %. %ias.Option (. We't.(orre$t Ans#er is. Warp.E)planation. N*+.

Question Number. 4. Whi$h o' the 'ollo#ing are generall/ $hara$teristi$ o' aramid 'ibre9e-lar; $omposites.Option A. igh tensile strength and 'le)ibilit/.Option %. ?le)ibilit/, sti''ness and $orrosi-e e''e$t in $onta$t #ith aluminium.Option (. igh tensile strength, sti''ness and abilit/ to $ondu$t ele$tri$it/.(orre$t Ans#er is. igh tensile strength, sti''ness and abilit/ to $ondu$t ele$tri$it/. O igh tensilestrength and 'le)ibilit/.E)planation. N*+.

Question Number. . Whi$h o' the 'ollo#ing are generall/ $hara$teristi$ o' $arbongraphite

'ibre $omposites.Option A. ?le)ibilit/, igh $ompressi-e strength and abilit/ to $ondu$t ele$tri$it/.


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Option %. ?le)ibilit/ and high $ompressi-e strength.Option (. Sti''ness, high $ompressi-e strength and $orrosi-e e''e$t in $onta$t #ithaluminium.(orre$t Ans#er is. Sti''ness, high $ompressi-e strength and $orrosi-e e''e$t in $onta$t #ithaluminium.E)planation. N*+.

Question Number. 6. Whi$h o' the 'ollo#ing statements is true about thermosettingplasti$s.Option A. 5he/ are also 0no#n as 5e'lon.Option %. On$e moulded into shape the/ be$ome set and $annot subse@uentl/ be so'tened b/reheating.Option (. 5he/ be$ome plasti$ #hen heat is applied.(orre$t Ans#er is. On$e moulded into shape the/ be$ome set and $annot subse@uentl/ beso'tened b/ reheating.E)planation. N*+.

03.1b. Aircraft Materials - Comosite and Non-Metallic ot!er t!an wood and fabric.

Question Number. 1. Whi$h o' the 'ollo#ing is sus$eptible to the ingress o'moisture.Option A. Flass 'ibre.Option %. (arbon 'ibre.Option (. e-lar.(orre$t Ans#er is. e-lar.E)planation. N*+.

Question Number. . What tests are done on adhesi-e Boints.Option A. Shear and peel.

Option %. *mpa$t and peel.Option (. *mpa$t and shear.(orre$t Ans#er is. Shear and peel.E)planation. N*+.

Question Number. 3. When using a hot bonder to e''e$t a $omposite repair, /ouuse.Option A. inorgani$ resin adhesi-es.Option %. organi$ resin adhesi-es.Option (. s/ntheti$ resin adhesi-es.(orre$t Ans#er is. s/ntheti$ resin adhesi-es.E)planation. N*+.

Question Number. 4. *n a $omposite repair la/8up, ho# mu$h should ea$h la/er e)tendbe/ond the la/er belo# it.Option A. 3 8 4 in$hes.Option %. 1 8 in$hes.Option (. 8 3 in$hes.(orre$t Ans#er is. 1 8 in$hes.E)planation. ?AA A(43 Page 38.

Question Number. . What is the e''e$t o' heat on a $old $ure resin.Option A. No e''e$t on pot li'e.

Option %. 2e$rease pot li'e.Option (. *n$rease pot li'e.


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(orre$t Ans#er is. 2e$rease pot li'e.E)planation. N*+.

Question Number. 6. *' /ou in$rease the amount o' $atal/st in a resin mi)ture,.Option A. the material #ill be$ome stronger.

Option %. the material #ill be$ome #ea0er.Option (. the pot li'e #ill be de$reased.(orre$t Ans#er is. the pot li'e #ill be de$reased.E)planation. N*+.

Question Number.


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Option (. peel pl/.(orre$t Ans#er is. breather mat.E)planation. 5he breather mat allo#s the air to 'lo# 'rom the repair.

Question Number. 13. What do /ou do i' /ou 'orget to add hardener to a $omposite

repair.Option A. Add hardener at the edges and it #ill $ure.Option %. *t #ill $ure e-entuall/ an/#a/.Option (. emo-e all resin and start again.(orre$t Ans#er is. emo-e all resin and start again.E)planation. N*+.

Question Number. 14. Wh/ #ould /ou use mi$roballoons as a 'iller.Option A. *t is the lightest 'iller material.Option %. *t is the $heapest 'iller material.Option (. *t $ross8lin0s #ith the panel.(orre$t Ans#er is. *t is the lightest 'iller material.

E)planation. Mi$roballoons is the lightest 'iller material.

Question Number. 1. When using a ba$0ing 'ormer on a $omposite repair /ou need touse.Option A. a -a$uum bag.Option %. $ellophane.Option (. breather $loth.(orre$t Ans#er is. $ellophane.E)planation. See Ieppesen Ad-an$ed (omposites.

Question Number. 16. eater mats should o-erlap the repair b/.

Option A. 4 in$hes.Option %. 6 in$hes.Option (. in$hes.(orre$t Ans#er is. in$hes.E)planation. See Ieppesen Ad-an$ed (omposites.

Question Number. 1


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Question Number. 1&. Stepped $uring has.Option A. or more arrest points.Option %. no arrest point.Option (. 1 arrest point.(orre$t Ans#er is. or more arrest points.E)planation. See Ieppesen Ad-an$ed (omposites 9d#ell time L soa0 time L arrest point;. Or AP

5e$hni$ian Air'rame 5e)tboo0.

Question Number. !. Ma)imum repair dimensions 'or use o' mi$roballoons is.Option A. 1!mm.Option %. !mm.Option (. 3!mm.(orre$t Ans#er is. 1!mm.E)planation. Ma)imum repair #ith mi$roballoons is appro)imatel/ 3= in$h 8 $losest here is 1! mm.A+


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Question Number. 6. one/$omb 'or repair $an be remo-ed #ith.Option A. a drill.Option %. lo$all/ manu'a$tured $on$a-e 0ni'e.Option (. a router.(orre$t Ans#er is. a router.E)planation. (A*Ps A+


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Question Number. 33. %ubbles are remo-ed 'rom a #et $omposite la/8up b/.Option A. appli$ation o' pressure.Option %. use o' a roller.Option (. appli$ation o' -a$uum.

(orre$t Ans#er is. use o' a roller.E)planation. %ubbles 9large ones an/#a/; are remo-ed #ith a roller.

Question Number. 34. Cse o' e)$essi-e hardener in pol/ester resin leads to.Option A. a less sti'' Boint.Option %. redu$ed pot li'e.Option (. sti''er Boint.(orre$t Ans#er is. redu$ed pot li'e.E)planation. 5oo mu$h hardener #ill greatl/ redu$e pot li'e as #ell as ma0e the pol/ester brittle.

Question Number. 3. When the temperature in$reases on a hot bond repair is paused it is

0no#n as.Option A. arrest point.Option %. ramping do#n.Option (. ramping up.(orre$t Ans#er is. arrest point.E)planation. amp8up7 and 7ramp8do#n7 re'er to the heating and $ooling rates 9in "( per minute;.When the heating is paused it is $alled 7hold7 or 7soa07 at the 7arrest point7.

Question Number. 36. Slight #a-iness on a 'ibre $omposite stru$ture.Option A. ma/ $ause 'atigue $ra$0 e-entuall/.Option %. ma/ be tolerable i' lightl/ loaded.Option (. $ould be rein'or$e #ith additional plies o-er the #ea0ened area.

(orre$t Ans#er is. ma/ be tolerable i' lightl/ loaded.E)planation. N*+.

Question Number. 3


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Question Number. 4!. *n an auto$la-e the air is remo-ed b/.Option A. pressure.Option %. roller.Option (. -a$uum.

(orre$t Ans#er is. -a$uum.E)planation. Air is remo-ed b/ -a$uum #hether an auto$la-e is used or not.

Question Number. 41. What is the separation o' an aramid panel la/ers des$ribedas.Option A. 2elamination.Option %. 2ebonding.Option (. 2eta$hment.(orre$t Ans#er is. 2elamination.E)planation. N*+.

Question Number. 4. 5ap testing a sand#i$h panel $onstru$tion.Option A. is not an appro-ed method o' testing.Option %. #ill not gi-e -er/ reliable results.Option (. is $rude, but #or0s remar0abl/ #ell.(orre$t Ans#er is. is $rude, but #or0s remar0abl/ #ell.E)planation. N*+.

Question Number. 43. Whi$h produ$t is a serious health haard #hen handling.Option A. (erami$.Option %. Asbestos.Option (. Flass 'ibre.(orre$t Ans#er is. Asbestos.

E)planation. N*+.

Question Number. 44. Air$ra't transparent plasti$s are $leaned using.Option A. #arm soap/ #ater, rinsed and dried.Option %. para''in and so't $otton pad.Option (. $lean dr/ so't leather.(orre$t Ans#er is. #arm soap/ #ater, rinsed and dried.E)planation. A+


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Question Number. 4


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Option (. pot li'e.(orre$t Ans#er is. pot li'e.E)planation. (A*P A+ matri) to 4!> 'ibre ratio.Option (. the orientation o' the plies to the load dire$tion.


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(orre$t Ans#er is. the orientation o' the plies to the load dire$tion.E)planation. N*+.

Question Number. 6!. Whi$h 'ibre to resin 9>; ratio 'or ad-an$ed $omposite #et la/8ups isgenerall/ $onsidered the best.

Option A. 6!:4!.Option %. !:!.Option (. 4!:6!.(orre$t Ans#er is. 4!:6!.E)planation. N*+.

Question Number. 61. What is the material la/er used #ithin the -a$uum bag pressure s/stemto absorb e)$ess resin during $uring $alled.Option A. %reather.Option %. %leeder.Option (. elease.(orre$t Ans#er is. %leeder.

E)planation. N*+.

Question Number. 6. When ne$essar/, #hat t/pe o' $utting 'luid is usuall/ a$$eptable 'orma$hining $omposite laminates.Option A. Water soluble oil.Option %. Water onl/.Option (. Water displa$ing oil.(orre$t Ans#er is. Water onl/.E)planation. N*+.

Question Number. 63. ?ibreglass laminate damage not e)$eeding the 'irst la/er or pl/ $an be

repaired b/.Option A. 'illing #ith putt/ $onsisting o' $ompatible resin and $lean, short glass 'ibres.Option %. sanding the damaged are until aerod/nami$all/ smooth.Option (. trimming the rough adges and sealing #ith paint.(orre$t Ans#er is. sanding the damaged are until aerod/nami$all/ smooth. O 'illing #ith putt/$onsisting o' $ompatible resin and $lean, short glass 'ibres.E)planation. N*+.

Question Number. 64. ?ibreglass damage that e)tends $ompletel/ through a laminatedsand#i$h stru$ture.Option A. ma/ be 'illed #ith resin to eliminate dangerous stress $on$entrations.Option %. must be repaired.

Option (. ma/ be 'illed #ith putt/ #hi$h is $ompatible #ith the resin.(orre$t Ans#er is. must be repaired.E)planation. A(43 8 must be repaired using a stepped8Boint or s$ar'ed repair.

Question Number. 6. ?ibreglass laminate damage that e)tends $ompletel/ through one'a$ing and into the $ore.Option A. $an be repaired b/ using a t/pi$al 'a$ing pat$h.Option %. re@uires repla$ement o' the damaged $ore and 'a$ing.Option (. $annot be repaired.(orre$t Ans#er is. re@uires repla$ement o' the damaged $ore and 'a$ing.E)planation. A(43.


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Question Number. 66. Whi$h o' the 'ollo#ing, #hen added to #et resins, pro-ide strength 'orthe repair o' damaged 'astener holes in $omposite panels.Option A. mi$roballoons, $otton 'lo$0 and $hopped 'ibres.Option %. (otton 'lo$0 and $hopped 'ibres.Option (. Mi$roballoons and $hopped 'ibres.(orre$t Ans#er is. (otton 'lo$0 and $hopped 'ibres.

E)planation. N*+.

Question Number. 6


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Question Number. 3. 5he de'e$ts not allo#ed at all on #ooden stru$tures are.Option A. mineral strea0s.Option %. pit$h po$0ets.Option (. $he$0s, sha0es and splits.

(orre$t Ans#er is. $he$0s, sha0es and splits.E)planation. AP 5e$hni$ian Air'rame 5e)tboo0 38.

Question Number. 4. 5he basi$ stru$ture o' an air$ra't made o' #ood $an be.Option A. [email protected] %. [email protected] (. non8mono$o@ue, mono$o@ue, semi8mono$o@ue.(orre$t Ans#er is. non8mono$o@ue, mono$o@ue, [email protected])planation. N*+.

Question Number. . When a 'ull inspe$tion 'or $orosion is to be $arried out on a #ooden

air$ra't /ou #ould.Option A. %ring the air$ra't into the hangar 'or to 3 da/s prior to the inspe$tion.Option %. Ia$0 and trestle the air$ra't to the rigging position.Option (. emo-e all the 'abri$$loth prior to inspe$tion.(orre$t Ans#er is. emo-e all the 'abri$$loth prior to inspe$tion.E)planation. A(43 Para 18&.

Question Number. 6. ?or 'ungus to $ause #ood de$a/ in a #ood stru$ture, the moisture$ontent in the #ood must be at least.Option A. !>.Option %. =>.Option (. >.

(orre$t Ans#er is. !>.E)planation. A(43 Para 18= a.

Question Number. .Option %. !83!>.Option (. !8>.(orre$t Ans#er is. 1!81>.E)planation. A(43 Para. 18& g.

Question Number. =. o# is the moisture $ontent #ithin the #ood o' a #ood air$ra't stru$turedetermined.Option A. %/ inserting the probe o' a moisture meter.Option %. %/ measuring the sie o' the #ater stains at Boints.Option (. %/ #eighing the #ood stru$ture be'ore and a'ter dr/ing it.(orre$t Ans#er is. %/ inserting the probe o' a moisture meter.E)planation. A(43 Para. 18& g.

Question Number. &. E)$ept #here spe$i'ied b/ the manu'a$turer, a #ooden spar ma/ bespli$ed.Option A. at no point.Option %. at an/ point e)$ept under the #ing atta$hment 'ittings.

Option (. at an/ point.(orre$t Ans#er is. at an/ point e)$ept under the #ing atta$hment 'ittings.


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E)planation. A(43 Para 184!.

Question Number. 1!. epla$ement o' a #ooden spar is.Option A. onl/ permitted b/ the manu'a$turer.Option %. a minor repair.

Option (. a maBor repair.(orre$t Ans#er is. a maBor repair.E)planation. A(43 Para. 1841.

Question Number. 11. A $ra$0 is 'ound in a #ooden spar, /ou.Option A. must repla$e the spar se$tion.Option %. might be able to repair the spar.Option (. must repla$e the entire spar.(orre$t Ans#er is. might be able to repair the spar.E)planation. A(43 Para. 1844.

Question Number. 1. Wood sealants used on #ooden air$ra't stru$tures are 'or.Option A. helping to pre-ent #ood $ra$0ing.Option %. impro-ing aerod/nami$ e''i$ien$/.Option (. redu$ing the re@uirement 'or sanding.(orre$t Ans#er is. helping to pre-ent #ood $ra$0ing.E)planation. A(43 Para. 1844 $.

Question Number. 13. 5o determine #hether an air$ra't #ooden stru$ture sur'a$e is $ompound$ur-ature, /ou #ould use.Option A. a $ur-ature gauge.Option %. a sheet o' paper.Option (. a trammel.

(orre$t Ans#er is. a sheet o' paper.E)planation. A(43 Para. 184=.

Question Number. 14. 5o assist the bending o' pl/#ood, a heated bending 'ormer must beheated to a temperature o'.Option A. 3!! "(.Option %. 1! "(.Option (. 1!! "(.(orre$t Ans#er is. 1! "(.E)planation. A(43 Para.184& b.

Question Number. 1. A spla/ed pat$h repair ma/ be used on pl/#ood damage #hi$h doesnot e)$eed.Option A. ! times the s0in thi$0ness.Option %. 1 times the s0in thi$0ness.Option (. 1! times the s0in thi$0ness.(orre$t Ans#er is. 1 times the s0in thi$0ness.E)planation. A(43 Para.181 a.

Question Number. 16. A sur'a$e pat$h to a pl/#ood stru$ture ma/ be a large as.Option A. ! [email protected]$h area.Option %. ! in$h perimeter.Option (. ! in$h diameter.

(orre$t Ans#er is. ! in$h perimeter.E)planation. A(43 Para.181 b.


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Question Number. 1


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Question Number. 4. A 7sha0e7 in a pie$e o' #ood is a $ra$0.Option A. a$ross annual rings.Option %. indu$ed b/ arti'i$ial stress.Option (. bet#een t#o annual rings.

(orre$t Ans#er is. bet#een t#o annual rings.E)planation. A(43 Para.18.

Question Number. . Wood #ith $he$0s, sha0es or splits.Option A. $an be used pro-iding the damage is repaired b/ gluing and $lamping.Option %. $an be used 'or $ertain se$ondar/ stru$ture.Option (. must be reBe$ted.(orre$t Ans#er is. must be reBe$ted.E)planation. A(43 Para 18.

Question Number. 6. (ompression #ood.

Option A. is a hard8#ood.Option %. should be reBe$ted.Option (. is pre'erred be$ause o' its superior strength @ualities.(orre$t Ans#er is. should be reBe$ted.E)planation. A(43 Para 18.

Question Number.


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Option A. 1:=.Option %. 1:!.Option (. 1:1.(orre$t Ans#er is. 1:1.E)planation. A(43 Para 181.

Question Number. 3. Nails used on #ood stru$tures should be.Option A. ! mm apart.Option %. 1 mm apart.Option (. mm apart.(orre$t Ans#er is. mm apart.E)planation. A(43 Para 1811 $.

Question Number. 33. Small 9up8to 3= in$h diameter; hard80nots are allo#ed in a #oodenspar.Option A. in the middle 13 portion.Option %. no#here.

Option (. in the outer 13 portions.(orre$t Ans#er is. in the middle 13 portion.E)planation. A(43 Para 181.

Question Number. 34. *' metal 'asteners are remo-ed 'rom an air$ra't7s #ood stru$ture, andare 'ound to ha-e $orrosion on them, this $an indi$ate.Option A. a$idit/ o' the adBoining #ood stru$ture.Option %. deterioration o' the 'astener.Option (. de$a/ o' the adBoining #ood stru$ture.(orre$t Ans#er is. de$a/ o' the adBoining #ood stru$ture.E)planation. A(43 18= B.

Question Number. 3. %olt holes through #ooden stru$tures should be.Option A. sealed, and the sealant allo#ed to dr/ be'ore 'itting the bolt.Option %. le't unsealed and un-arnished inside the hole.Option (. sealed #ith -arnish and #et8assembled #ith the bolt be'ore the -arnish has dried.(orre$t Ans#er is. sealed, and the sealant allo#ed to dr/ be'ore 'itting the bolt.E)planation. A(43 18


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Option A. shear 'ailure.Option %. de$a/.Option (. $ompression 'ailure.(orre$t Ans#er is. $ompression 'ailure.E)planation. A(43.

Question Number. 3&. 5he *8beam #ooden spar is routed to.Option A. obtain uni'orm strength.Option %. de$rease #eight.Option (. in$rease strength.(orre$t Ans#er is. de$rease #eight.E)planation. N*+.

Question Number. 4!. Pin 0not $lusters are permitted in #ood air$ra't stru$turepro-ided.Option A. the/ ha-e no mineral strea0s.Option %. no pit$h po$0ets are #ithin 1 in$hes.

Option (. the/ produ$e a small e''e$t o' grain dire$tion.(orre$t Ans#er is. the/ produ$e a small e''e$t o' grain dire$tion.E)planation. A(43.

Question Number. 41. (ompression 'ailures in #ood air$ra't stru$tures are $hara$terised b/bu$0ling o' the 'ibres that appear as strea0s on the sur'a$e.Option A. parallel to the grain.Option %. at right8angles to the gro#th rings.Option (. at right angles to the grain.(orre$t Ans#er is. at right angles to the grain.E)planation. N*+.

03.3. Aircraft Materials - Fabric Co$erin%.

Question Number. 1. ?abri$s ma/ be 'itted to air'rame stru$tures b/.Option A. al#a/s ri-eting.Option %. #ood nails.Option (. t/ing on #ith string.(orre$t Ans#er is. t/ing on #ith string.E)planation. N*+.

Question Number. . Air$ra't 'abri$ $o-ering is made 'rom.Option A. sil0.

Option %. pol/ester.Option (. n/lon.(orre$t Ans#er is. pol/ester.E)planation. A(43 Para 83 a.

Question Number. 3. At manu'a$ture, air$ra't 'abri$ is.Option A. shrun0.Option %. doped.Option (. stret$hed.(orre$t Ans#er is. stret$hed.E)planation. A(43 Para 83 b.


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Question Number. 4. e$o-ering or repairing o' an air$ra't #ith a 'abri$ other than theoriginal 'abri$ t/pe is.Option A. a maBor modi'i$ation and re@uires appro-al.Option %. prohibited.Option (. a minor modi'i$ation, pro-iding the 'abri$ is the same strength as the original.(orre$t Ans#er is. a maBor modi'i$ation and re@uires appro-al.

E)planation. A(43 Para 8 NO5E.

Question Number. . ein'or$ing tape used on air$ra't 'abri$ $o-ering must ha-e a minimumstrength o'.Option A. =! lb.Option %. 4! lb.Option (. 1! lb.(orre$t Ans#er is. 4! lb.E)planation. A(43 Para 8 a.

Question Number. 6. +a$ing $ord used on air$ra't 'abri$ $o-ering must ha-e a minimum

brea0ing strength o'.Option A. 1! lb.Option %. =! lb.Option (. 4! lb.(orre$t Ans#er is. 4! lb.E)planation. A(43 Para 8 $.

Question Number.


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Question Number. 11. ?abri$ to be hand se#n must be doubled under at the edge to aminimum distan$e o'.Option A. 1 in$h.Option %. 3= in$h.Option (. 14 in$h.(orre$t Ans#er is. 3= in$h.

E)planation. A(43 Para 8< a .

Question Number. 1. oles are $ut in 'abri$ 'or inspe$tion panels, spar 'ittings, draingrommets et$.Option A. a'ter doping.Option %. be'ore doping.Option (. be'ore atta$hing the 'abri$ to the stru$ture.(orre$t Ans#er is. a'ter doping.E)planation. A(43 Para 8& a.

Question Number. 13. Air$ra't 'abri$ la$ing $ord is rein'or$ed #ith.

Option A. epo)/.Option %. #a).Option (. lanolin.(orre$t Ans#er is. #a).E)planation. A(43 Para 81! d .

Question Number. 14. 5he dope applied to an air$ra't7s 'abri$ $o-ering $ausesshrin0age.Option A. on the last $oat onl/.Option %. on the 'irst $oat onl/.Option (. on all $oats.(orre$t Ans#er is. on all $oats.

E)planation. A(43 Para 8!.

Question Number. 1. 5he t#o pre'erred t/pes o' dope used on air$ra't 'abri$ $o-eringis.Option A. $ellulose and pol/ester.Option %. $ellulose and but/rate.Option (. nitrate and but/rate.(orre$t Ans#er is. nitrate and but/rate.E)planation. A(43 Para 8!.

Question Number. 16. Air$ra't dope, during storage in ad-erse $onditions in a store8room, #ill

be$ome.Option A. a$idi$.Option %. dis$oloured.Option (. al0aline.(orre$t Ans#er is. a$idi$.E)planation. A(43 Para 8! b.

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Question Number. 1=. Whi$h o' the 'ollo#ing is true regarding air$ra't dopet/pe.Option A. Nitrate dope ma/ be applied o-er the top o' but/rate dope.Option %. %ut/rate dope ma/ be applied o-er the top o' nitrate dope.

Option (. Either t/pe o' dope ma/ be applied o-er the top o' an/ t/pe o' dope.(orre$t Ans#er is. %ut/rate dope ma/ be applied o-er the top o' nitrate dope.E)planation. A(43 Para 8! $.

Question Number. 1&. What t/pe o' shoes should be #orn b/ the te$hni$ian appl/ing a dope'inish to a 'abri$ $o-ered air$ra't.Option A. ubber soled.Option %. +eather soled.Option (. Plasti$ uppers.(orre$t Ans#er is. +eather soled.E)planation. A(43 Para 8! ' table 83.

Question Number. !. What are the limits o' the en-ironmental $onditions 'or appl/ing dope toa 'abri$ $o-ered air$ra't.Option A. elati-e humidit/ ! 8 , temperature range 4! " to 6! "?.Option %. elati-e humidit/ ! 8 , temperature range 6 " to


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Question Number. . 2ope should be applied to an air$ra't7s 'abri$ $oating in a relati-ehumidit/ not e)$eeding.Option A. !>.Option %. =>.

Option (. 6>.(orre$t Ans#er is. 6>.E)planation. A(43 Para 81 6.

Question Number. 6. 2ressing out7 o' a 'abri$ $o-ering re'ers to.Option A. the trimming o' e)$ess 'abri$ a'ter 'itting.Option %. appl/ing 'inishing tapes, rein'or$ing pat$hes, inspe$tion ports et$.Option (. la/ing the 'abri$ out on the 'loor and $utting it to sie prior to 'itting to the air$ra't.(orre$t Ans#er is. appl/ing 'inishing tapes, rein'or$ing pat$hes, inspe$tion ports et$.E)planation. A(43 Para 81 d.

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Question Number. 3. Orange peeling o' a doped sur'a$e ma/ be $aused b/.Option A. Orange peeling o' a doped sur'a$e ma/ be $aused b/.Option %. air temperature too lo#.Option (. spra/ gun pressure too lo#.(orre$t Ans#er is. spra/ gun pressure too lo#.

E)planation. A(43 Para 83 $.

Question Number. 33. %ut/rate dope burns.Option A. slo#er than nitrate dope.Option %. 'aster than nitrate dope.Option (. the same rate as nitrate dope.(orre$t Ans#er is. slo#er than nitrate dope.E)planation. A(43 Para 83.

Question Number. 34. ?abri$ $oated #ith nitrate dope $an be di''erentiated 'rom 'abri$ $oatedin but/rate dope b/.

Option A. $arr/ing out a burn test.Option %. smelling the 'abri$.Option (. obser-ing the $olour.(orre$t Ans#er is. $arr/ing out a burn test.E)planation. A(43 Para 83.

Question Number. 3. *' the 'abri$ on a #ood'abri$ air$ra't has lost its strength.Option A. the 'abri$ $an be treated #ith a reBu-enator.Option %. the 'abri$ $an be treated #ith additional $oats o' the appro-ed t/pe o' dope.Option (. the 'abri$ must be repla$ed.(orre$t Ans#er is. the 'abri$ $an be treated #ith additional $oats o' the appro-ed t/pe o' dope. Othe 'abri$ must be repla$ed.

E)planation. A(43 Para 83.

Question Number. 36. When repairing a se$tion o' air$ra't 'abri$ #ith a ne# 'abri$pat$h.Option A. all the dope must be remo-ed 'rom the parent 'abri$ 'a/ing sur'a$e be'ore the pat$h isapplied.Option %. the pat$h $an be applied to the parent 'abri$ #ithout preparation.Option (. all the aluminium8pigmented dope la/ers must be remo-ed 'rom the parent 'abri$'a/ing sur'a$e be'ore the pat$h is applied.(orre$t Ans#er is. the pat$h $an be applied to the parent 'abri$ #ithout preparation. O all thealuminium8pigmented dope la/ers must be remo-ed 'rom the parent 'abri$ 'a/ing sur'a$e be'ore thepat$h is applied.

E)planation. A(43 Para 84 b.

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Question Number. 3=. Where the edge o' a ne# 'abri$ se$tion #ill be lo$ated #ithin 1 in$h o' astru$tural member to #hi$h the 'abri$ is atta$hed b/ rib la$ing or other methods, the ne# 'abri$se$tion should.Option A. be e)tended 3 in$hes past the stru$tural member.Option %. be e)tended to meet the stru$tural member.Option (. be designated a maBor repair.

(orre$t Ans#er is. be e)tended 3 in$hes past the stru$tural member.E)planation. A(43 Para 84 '.

Question Number. 3&. What #idth o' 'inishing tape should be used on a tear in a 'abri$ $o-er#hi$h is 1! in$hes long.Option A. in$hes.Option %. 6 in$hes.Option (. 4 in$hes.(orre$t Ans#er is. 4 in$hes.E)planation. A(43 844 a.

Question Number. 4!. What #idth o' 'inishing tape should be used on a tear in a 'abri$ $o-er#hi$h is ! in$hes long.Option A. 6 in$hes.Option %. in$hes.Option (. 4 in$hes.(orre$t Ans#er is. 6 in$hes.E)planation. A(43 844 $.

Question Number. 41. +ines o' stit$hing o' a 'abri$ repair is lo$0ed at the end#ith.Option A. a hit$h 0not.Option %. a hal' hit$h 0not.

Option (. a double hal' hit$h 0not.(orre$t Ans#er is. a double hal' hit$h 0not.E)planation. A(43 843 ?igure 813.

Question Number. 4. Wrin0les in a 'abri$ $o-ering o' a #ood'abri$ air$ra't are.Option A. not permitted.Option %. a minor aerod/nami$ detriment.Option (. permitted onl/ i' the/ are temporar/ due to damp#et #eather $onditions.(orre$t Ans#er is. permitted onl/ i' the/ are temporar/ due to damp#et #eather $onditions.E)planation. A(43 83! b 93; NO5E.

Question Number. 43. 5he threads per in$h o' Frade 7A7 air$ra't 'abri$ is.Option A. 6!864.Option %. =!8=4.Option (. 11!811.(orre$t Ans#er is. =!8=4.E)planation. A(43 86 5able 81.

Question Number. 44. When and ho# is 'inishing tape applied on 'abri$ $o-eredair$ra't.Option A. 2oped on immediatel/ prior to the 'inish $oat.Option %. Se#ed or la$ed on be'ore dope is applied.Option (. 2oped on a'ter the 'irst or se$ond $oat o' dope.

(orre$t Ans#er is. 2oped on a'ter the 'irst or se$ond $oat o' dope.E)planation. A(43.


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Question Number. 4. 5he determining 'a$tor in the sele$tion o' the $orre$t #eight o' te)tile'abri$ to be used in $o-ering an/ t/pe o' air$ra't is the.Option A. ma)imum #ing loading.Option %. speed o' the air$ra't.

Option (. speed o' the air$ra't and the ma)imum #ing loading.(orre$t Ans#er is. speed o' the air$ra't and the ma)imum #ing loading.E)planation. A(43.

Question Number. 46. o# man/ 'abri$ thi$0nesses #ill be 'ound in a ?ren$h8'ellseam.Option A. ?i-e.Option %. 5hree.Option (. ?our.(orre$t Ans#er is. ?our.E)planation. 5he edges o' the 'abri$ are 'olded o-er ea$h other, so the threads o' a double ro# o'stit$hes passes through 'our thi$0nesses o' 'abri$.

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Option A. 6 pounds per in$h #arp and #e't.Option %. o' its original strength.Option (. o' the original strength 'or intermediate 'abri$.(orre$t Ans#er is. o' the original strength 'or intermediate 'abri$.E)planation. N*+.

Question Number. . What is used to slo# the dr/ing time o' some dope 'inishes to pre-entblush.Option A. eBu-enator.Option %. edu$er.Option (. etarder.(orre$t Ans#er is. etarder.E)planation. N*+.

Question Number. 3. Aluminium8pigment in dope is used primaril/ to.Option A. e)$lude sunlight 'rom the 'abri$.Option %. pro-ide a sil-er $olour.

Option (. aid in sealing out moisture 'rom the 'abri$.(orre$t Ans#er is. e)$lude sunlight 'rom the 'abri$.E)planation. N*+.

0a. Corrosion.

Question Number. 1. ?rom the 'ollo#ing list o' metals, #hi$h is most $athodi$.Option A. Ni$0el.Option %. Magnesium.Option (. Stainless steel.(orre$t Ans#er is. Stainless steel.E)planation. N*+.

Question Number. . *ntergrannular $orrosion is $aused b/.Option A. improperl/ assembled $omponents.Option %. improper heat treatment.Option (. dissimilar metal $onta$t.(orre$t Ans#er is. improper heat treatment.E)planation. N*+.

Question Number. 3. (orrosion $aused b/ ele$trol/ti$ a$tion is the result o'.Option A. $onta$t bet#een t#o unli0e metals.Option %. e)$essi-e anodiation.

Option (. the #rong @uen$hing agent.(orre$t Ans#er is. $onta$t bet#een t#o unli0e metals.E)planation. N*+.

Question Number. 4. (orrosion ma/ be regarded as the destru$tion o' metal b/.Option A. ele$tro$hemi$al a$tion.Option %. h/droele$tri$ a$tion.Option (. ele$trome$hani$al a$tion.(orre$t Ans#er is. ele$tro$hemi$al a$tion.E)planation. (orrosion is ele$tro$hemi$@al a$tion. %+481 .

Question Number. . E)'oliation $orrosion is sometimes re'erred to as.Option A. la/er $orrosion.


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Option %. 'ili'orm $orrosion.Option (. sub8sur'a$e $orrosion.(orre$t Ans#er is. la/er $orrosion.E)planation. N*+.

Question Number. 6. When dissimilar metals are brought together, or the same metal indi''erent states, one metal 'orms the anode and the other the $athode. Whi$h #ill su''er 'rom$orrosion.Option A. %oth #ill $orrode e@uall/.Option %. 5he $athode.Option (. 5he anode.(orre$t Ans#er is. 5he anode.E)planation. 5he anode al#a/s $orrodes.

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Option %. $/$li$ stressing and a de$rease in $ross se$tional area.Option (. the Boining o' dissimilar metals.(orre$t Ans#er is. the Boining o' dissimilar metals.E)planation. N*+.

Question Number. 13. *n the gal-ani$ series, the most noble metal #ill, i' Boined to anothermetal.Option A. al#a/s be at the top o' the table.Option %. $orrode be'ore the less noble metal.Option (. allo# the less noble metal to $orrode 'irst.(orre$t Ans#er is. allo# the less noble metal to $orrode 'irst.E)planation. N*+. http:###.m$nall/institute.$om(hartsgal-ani$8series.html

Question Number. 14. Stress $orrosion is asso$iated #ith.Option A. $/$li$ loading and a $orrosion pit.Option %. a $orrosion pit in a member under a $ompressi-e load.Option (. a $orrosion pit in a member under stress.

(orre$t Ans#er is. a $orrosion pit in a member under stress.E)planation. N*+.

Question Number. 1. (orrosion #ill spread more rapidl/ #hen metals are e)posedto.Option A. $old $limates.Option %. high temperatures.Option (. dr/ $limates.(orre$t Ans#er is. high temperatures.E)planation. N*+.

Question Number. 16. Whi$h is the 'ollo#ing $orre$t statement.Option A. Selenious a$id is used 'or the re8prote$tion o' aluminium allo/s.Option %. 5he $hemi$al test 'or brone is nitri$ a$id #hi$h produ$es a #hite pre$ipitate.Option (. All $orrosion is a $hemi$al a$tion.(orre$t Ans#er is. 5he $hemi$al test 'or brone is nitri$ a$id #hi$h produ$es a #hite pre$ipitate.O All $orrosion is a $hemi$al a$tion.E)planation. N*+.

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Option %. porous.Option (. hard and porous.(orre$t Ans#er is. non8porous.E)planation. 5hat is #h/ aluminium does not $orrode.

Question Number. !. (orrosion $ontrol begins at the.Option A. produ$tion stage.Option %. manu'a$turing stage.Option (. design stage.(orre$t Ans#er is. design stage.E)planation. N*+.

Question Number. 1. Aluminium is.Option A. not resistant to $orrosion.Option %. highl/ resistant to $orrosion.Option (. reasonabl/ resistant to $orrosion.(orre$t Ans#er is. highl/ resistant to $orrosion.

E)planation. N*+.

Question Number. . When gal-ani$ $orrosion ta0es pla$e, #hi$h part $orrodes.Option A. Anode.Option %. O)ide 'ilm $oating.Option (. (athode.(orre$t Ans#er is. Anode.E)planation. N*+.

Question Number. 3. (orrosion $aused b/ gal-ani$ a$tion is the result o'.Option A. $onta$t bet#een t#o unli0e metals.

Option %. e)$essi-e anodiation.Option (. e)$essi-e et$hing.(orre$t Ans#er is. $onta$t bet#een t#o unli0e metals.E)planation. N*+.

0b. Corrosion.

Question Number. 1. What sort o' $orrosion #ould a magneto be li0el/ to en$ounter i'$ompletel/ en$losed.Option A. None, pro-iding the magneto is $ompletel/ en$losed.Option %. 2ire$t $hemi$al atta$0.Option (. Pitting.

(orre$t Ans#er is. 2ire$t $hemi$al atta$0.E)planation. %+481 3.1.=.

Question Number. . What are the signs o' 'retting $orrosion.Option A. %la$0 po#der or $o$oa staining.Option %. *ntergranular $ra$0ing.Option (. ?la0ing.(orre$t Ans#er is. %la$0 po#der or $o$oa staining.E)planation. (A*P %+481 para 3.1..

Question Number. 3. %la$0 strea0s ba$0 'rom a ri-et hole signi'/.

Option A. gal-ani$ $orrosion.Option %. intergrannular $orrosion.


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Option (. 'retting.(orre$t Ans#er is. 'retting.E)planation. ?retting $orrosion is identi'ied b/ bla$0 gre/ strea0s. %+481 3.1..

Question Number. 4. When a steel part is #elded, $orrosion o$$urs be$ause.

Option A. it is a''e$ted b/ spatter.Option %. the strip has be$ome anodi$.Option (. paint has been remo-ed.(orre$t Ans#er is. the strip has be$ome anodi$.E)planation. %+481 3.1.4.

Question Number. . *ntergranular $orrosion.Option A. $an be re$ognied b/ a gre/ po#der deposit.Option %. ma/ ha-e no -isual sur'a$e indi$ation.Option (. $an be re$ognied b/ its 'la0ing and li'ting o' the material la/ers.(orre$t Ans#er is. ma/ ha-e no -isual sur'a$e indi$ation.E)planation. %+481 .3..

Question Number. 6. A$ti-e 'lu) does #hat.Option A. Prote$ts.Option %. (leans.Option (. %oth $leans and prote$ts.(orre$t Ans#er is. (leans.E)planation. N*+.

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Option (. transgranulation.(orre$t Ans#er is. ele$trol/sis.E)planation. N*+.

Question Number. 11. 5he ele$trol/ti$ pro$ess that 'orms an o)ide 'ilm on the sur'a$e o'

aluminium allo/s is 0no#n as.Option A. gal-aniing.Option %. anodiing.Option (. ele$troplating.(orre$t Ans#er is. anodiing.E)planation. N*+.

Question Number. 1. What is the indi$ation o' 'retting $orrosion on aluminiumallo/.Option A. %la$0 po#der.Option %. %ro#n po#der.Option (. White po#der.

(orre$t Ans#er is. %la$0 po#der.E)planation. ?retting $orrosion is identi'ied b/ a bla$0 gre/ po#der strea0.

Question Number. 13. What a$tion is ta0en to prote$t integral tan0s 'rom $orrosion due tomi$ro8biologi$al gro#th.Option A. 5he inside o' the tan0 is $oated #ith /ello# $hromate.Option %. ubber liners are installed in the tan0.Option (. A bio$idal additi-e is used in the 'uel.(orre$t Ans#er is. A bio$idal additi-e is used in the 'uel.E)planation. N*+.

Question Number. 14. What t/pe o' $orrosion atta$0s grain boundaries o' aluminium allo/s#hi$h are improperl/ or inade@uatel/ heat treated.Option A. Stress $orrosion.Option %. *ntergranular $orrosion.Option (. Sur'a$e $orrosion.(orre$t Ans#er is. *ntergranular $orrosion.E)planation. N*+.

Question Number. 1. 5he arti'i$ial produ$tion o' a 'ilm o' o)ide on the sur'a$e o' aluminium oran/ o' its allo/s is $ommonl/ $alled.Option A. alodiing.Option %. par$o lubriing.

Option (. anodiing.(orre$t Ans#er is. anodiing.E)planation. Anodiing is an arti'i$iall/ produ$ed la/er o' o)ide on the sur'a$e o' aluminium 9ortitanium;.

Question Number. 16. *ntergrannular $orrosion in stru$tural aluminium allo/ parts.Option A. are not li0el/ to o$$ur in parts 'abri$ated 'rom heat8treated sheet aluminium.Option %. ma/ be dete$ted b/ the #hite, po#der/ deposit 'ormed on the sur'a$e o' themetal.Option (. $annot al#a/s be dete$ted b/ sur'a$e indi$ations.(orre$t Ans#er is. ma/ be dete$ted b/ the #hite, po#der/ deposit 'ormed on the sur'a$e o' themetal. O $annot al#a/s be dete$ted b/ sur'a$e indi$ations.

E)planation. N*+.


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Option %. 2e8$orrode and reprote$t.Option (. ene# $orroded area b/ pat$hing.(orre$t Ans#er is. epla$e $omplete $omponent part.E)planation. N*+.

Question Number. 4. Anodi$ treatment o' aluminium allo/ gi-es.Option A. a purple 'inish.Option %. a shorter li'e due to hardening.Option (. a pure $oating o' aluminium o)ide on the sur'a$e.(orre$t Ans#er is. a pure $oating o' aluminium o)ide on the sur'a$e.E)planation. N*+.

Question Number. . (orrosion at the grain boundaries is $alled.Option A. intergrannular.Option %. 'retting.Option (. 'ili'orm.(orre$t Ans#er is. intergrannular.

E)planation. N*+.

Question Number. 6. ?retting $orrosion o$$urs #here.Option A. t#o material are subBe$t to -er/ slight mo-ement bet#een the t#o.Option %. a deep s$rat$h in$reases to be$ome 'retting $orrosion.Option (. pitting $orrosion is allo#ed to be$ome more pronoun$ed.(orre$t Ans#er is. t#o material are subBe$t to -er/ slight mo-ement bet#een the t#o.E)planation. ?retting is $orrosion $ombined #ith small relati-e mo-ement.

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(orre$t Ans#er is. Sur'a$e $ra$0ing as $orrosion brea0s through to sur'a$e o' $omponent. O2ar0 staining around area.E)planation. ?retting $orrosion is $aused #hen there is some relati-e mo-ement bet#een parts,$ausing a 'ine dar0 po#der/ paste o' $orrosion produ$ts. %+481 Para.3.1..

Question Number. 31. Spilled mer$ur/ on aluminium.Option A. in$reases sus$eptibilit/ to h/drogen embrittlementOption %. ma/ $ause impaired $orrosion resistan$e i' le't in prolonged $onta$t.Option (. $auses rapid and se-ere $orrosion in prolonged $onta$t.(orre$t Ans#er is. ma/ $ause impaired $orrosion resistan$e i' le't in prolonged $onta$t. O $ausesrapid and se-ere $orrosion in prolonged $onta$t.E)planation. %+481! Para..

Question Number. 3. *nter$r/stalline $orrosion.Option A. is dete$table b/ )8ra/s.Option %. is the same as e)'oliation $orrosion.Option (. al#a/s appears as small sur'a$e $ra$0s.

(orre$t Ans#er is. is dete$table b/ )8ra/s.E)planation. N*+.

Question Number. 33. 5he usual manu'a$turers anti8$orrosion pro$ess to be applied to ?eair$ra't parts is.Option A. $admium plating.Option %. anodising.Option (. metal spra/ing.(orre$t Ans#er is. $admium plating.E)planation. N*+.

Question Number. 34. (hromate treatment is applied to.Option A. Al allo/s.Option %. ?e allo/s.Option (. magnesium allo/s.(orre$t Ans#er is. magnesium allo/s.E)planation. N*+.

Question Number. 3. Anti8$orrosion treatment used on Magnesium is.Option A. $hromating.Option %. ele$tro8plating.Option (. phosphating.(orre$t Ans#er is. $hromating.

E)planation. %+483 3.1.3.

Question Number. 36. ?retting $orrosion o$$urs #ith.Option A. #ater trapped bet#een mo-ing parts.Option %. -ibration in bolted parts.Option (. improper heat treatment.(orre$t Ans#er is. -ibration in bolted parts.E)planation. %+481 3.1..

Question Number. 3


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(orre$t Ans#er is. E)'oliation.E)planation. %+481 .3.3 7e)'oliation is A less harm'ul 'orm o' intergranular atta$07.

Question Number. 3=. 2uring $onstru$tion, sharp internal $orners and ina$$essible pla$esshould be a-oided to redu$e.

Option A. 'ili'orm $orrosion.Option %. 'retting $orrosion.Option (. $re-i$e $orrosion.(orre$t Ans#er is. $re-i$e $orrosion.E)planation. N*+.

Question Number. 3&. 5o $he$0 the interior o' tubular members 'or $orrosionatta$0.Option A. an/ 'orm o' test is a$$eptable.Option %. ultra soni$ testing is ne$essar/.Option (. d/e penetrant testing should be used.(orre$t Ans#er is. ultra soni$ testing is ne$essar/.

E)planation. N*+.

Question Number. 4!. Anodising is a 'orm o'.Option A. arti'i$ial prote$tion.Option %. metalli$ $oating.Option (. sa$ri'i$ial prote$tion.(orre$t Ans#er is. arti'i$ial prote$tion.E)planation. N*+.

Question Number. 41. 5he Alo$rom 1!! pro$ess #as designed to treat.Option A. $hromium plating.

Option %. small sur'a$es.Option (. sur'a$es too large 'or dip treatment.(orre$t Ans#er is. small sur'a$es.E)planation. N*+.

Question Number. 4. 5he arti'i$ial produ$tion o' a 'ilm o' o)ide on the sur'a$e o' aluminium oran/ o' its allo/s is $ommonl/ $alled.Option A. anodiing.Option %. par$o lubriing.Option (. alodiing.(orre$t Ans#er is. anodiing.E)planation. N*+.

Question Number. 43. Alodiing prote$ts allo/ metal 'rom $orrosion and does #hatelse.Option A. Ma0es a good sur'a$e 'or paint to adhere to.Option %. Ma0es the sur'a$e al0aline.Option (. Seals the sur'a$e 'rom moisture.(orre$t Ans#er is. Ma0es a good sur'a$e 'or paint to adhere to.E)planation. N*+.

Question Number. 44. When $leaning air$ra't 'a/ing sur'a$es, a $ause 'or $on$ernis.

Option A. $orrosion a$ting on the end 'a$es o' panels.Option %. sharp $orners et$ trapping $orrosi-e $hemi$als.


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Option (. lea0s into the 'uselage.(orre$t Ans#er is. $orrosion a$ting on the end 'a$es o' panels.E)planation. N*+.

Question Number. 4. 5he 'orm o' $orrosion most li0el/ to $ause stress $on$entration

is.Option A. Sur'a$e (orrosion.Option %. ?retting (orrosion.Option (. Pitting (orrosion.(orre$t Ans#er is. Pitting (orrosion.E)planation. N*+.

Question Number. 46. +ead a$id batter/ 'luid has been 'ound to be lea0ing on the sur'a$e o'the air$ra't stru$ture. What substan$e #ould /ou use to neutralise the a$id.Option A. Sulphur and +ime.Option %. ot distilled #ater.Option (. Sodium bi$arbonate o' soda.

(orre$t Ans#er is. Sodium bi$arbonate o' soda.E)planation. (A*P %+481 para 4.1.3.

Question Number. 4


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Option A. the d/e mar0 #ill not rub o''.Option %. the d/e mar0 has no importan$e.Option (. the d/e mar0 #ill rub o''.(orre$t Ans#er is. the d/e mar0 #ill not rub o''.E)planation. N*+.

Question Number. . Aluminium allo/ parts are o'ten prote$ted b/ the.Option A. Alo$rom plating.Option %. $hromium plating pro$ess.Option (. Alo$rom 1!! pro$ess.(orre$t Ans#er is. Alo$rom 1!! pro$ess.E)planation. N*+. http:###.amberele$t.$o.u0page1.htm

Question Number. 3. (orrosion is al#a/s $ompletel/ remo-ed.Option A. to pre-ent 'urther damage.Option %. to 'it ne# parts.Option (. to permit the e)tent o' damage to be assessed.

(orre$t Ans#er is. to permit the e)tent o' damage to be assessed.E)planation. N*+.

Question Number. 4. (orrosion on a $opper allo/ $an be re$ognised b/.Option A. bluegreen deposit.Option %. #hite deposit.Option (. gre/ deposit.(orre$t Ans#er is. bluegreen deposit.E)planation. N*+.

Question Number. . Whi$h o' the 'ollo#ing is a temporar/ prote$ti-e measure.

Option A. Sa$ri'i$ial prote$tion.Option %. (hromating.Option (. Paint 'inish.(orre$t Ans#er is. (hromating.E)planation. N*+.

Question Number. 6. Whi$h anti8$orrosion $hemi$al treatment is normall/ applied toaluminium allo/s.Option A. Pure aluminium.Option %. Anodising.Option (. (admium.(orre$t Ans#er is. Anodising.

E)planation. Al$lad is not $onsidered a $hemi$al treatment.

Question Number.


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Option (. di$hromating.(orre$t Ans#er is. alodiing.E)planation. Alodiing is a 9non8ele$trol/ti$; deposition o' o)ide 'ilm.

Question Number. &. Whi$h o' the 'ollo#ing are a$$eptable to use in $leaning anodied

sur'a$es.Option A. Steel #ool, aluminium #ool, 'ibre bristle brush.Option %. Aluminium #ool, 'ibre bristle brush.Option (. %rass #ire brush, stainless steel #ire brush.(orre$t Ans#er is. Aluminium #ool, 'ibre bristle brush.E)planation. N*+.

Question Number. 6!. A primar/ $ause o' intergranular $orrosion is.Option A. improper heat treatment.Option %. improper appli$ation o' primer.Option (. dissimilar metal $onta$t.(orre$t Ans#er is. improper heat treatment.

E)planation. N*+.

Question Number. 61. Whi$h o' these materials is the most anodi$.Option A. Magnesium.Option %. (admium.Option (.

Question Number. 6. Whi$h o' these materials is the most $athodi$.Option A. !4 aluminium allo/.

Option %. Kin$.Option (. Stainless steel.(orre$t Ans#er is. Stainless steel.E)planation. N*+.

Question Number. 63. Fal-ani$ $orrosion is most li0el/ to be most rapid and se-ere#hen.Option A. the sur'a$e area o' the anodi$ metal is smaller than the sur'a$e area o' the $athodi$material.Option %. the sur'a$e area o' the $athodi$ metal and the anodi$ material are appro)imatel/ thesame.Option (. the sur'a$e area o' the $athodi$ metal is smaller than the sur'a$e area o' the anodi$

material.(orre$t Ans#er is. the sur'a$e area o' the $athodi$ metal and the anodi$ material areappro)imatel/ the same. O the sur'a$e area o' the anodi$ metal is smaller than the sur'a$e area o'the $athodi$ material.E)planation. N*+.

0'.1. Fasteners - #crew (!reads.

Question Number. 1. 5he pit$h o' a s$re# thread is.Option A. $rest to root.Option %. $rest to root.Option (. $rest to $rest.

(orre$t Ans#er is. $rest to root.E)planation. Pit$h is $rest to $rest. %+38 3.


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Question Number. . A single start thread the lead is.Option A. pit$h.Option %. 1 pit$h.Option (. R pit$h.

(orre$t Ans#er is. 1 pit$h.E)planation. +ead L pit$h starts.

Question Number. 3. A #ire thread insert tap is.Option A. supplied in a 'itting 0it.Option %. slightl/ larger than the hole.Option (. slightl/ smaller than the hole.(orre$t Ans#er is. supplied in a 'itting 0it.E)planation. %+83 ...

Question Number. 4. Multi8start threads.

Option A. in$rease the lead and de$rease the pit$h.Option %. in$rease the lead #ithout in$reasing the pit$h.Option (. in$rease the lead and the pit$h.(orre$t Ans#er is. in$rease the lead #ithout in$reasing the pit$h.E)planation. +ead L pit$h starts.

Question Number. . %uttress threads are used.Option A. to transmit po#er in both dire$tions.Option %. to transmit po#er on one dire$tion.Option (. on nuts and bolts.(orre$t Ans#er is. to transmit po#er on one dire$tion.E)planation. %uttress threads are used to transmit po#er in one dire$tion 9li0e some -i$e lead

s$re#s;.

Question Number. 6. 5he lead on a single start thread is.Option A. 1 the pit$h.Option %. the pit$h.Option (. 1 the pit$h.(orre$t Ans#er is. 1 the pit$h.E)planation. +ead L pit$h starts.

Question Number.


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Option A. G thread.Option %. round thread.Option (. buttress.(orre$t Ans#er is. G thread.E)planation. G thread is the most $ommonl/ used thread 'orm.

Question Number. 1!. Pit$h o' a s$re# thread is de'ined as.Option A. distan$e 'rom the $entre o' one $rest to the ne)t.Option %. di''eren$e bet#een maBor diameter and minor diameter.Option (. distan$e bet#een the $rest and the root o' the thread.(orre$t Ans#er is. distan$e 'rom the $entre o' one $rest to the ne)t.E)planation. Pit$h is $rest to $rest.

Question Number. 11. 5he angle o' a s$re# thread is.Option A. hal' the in$lusi-e angle o' the thread sides.Option %. the in$lusi-e angle o' the thread sides.Option (. the distan$e the thread mo-es in one turn.

(orre$t Ans#er is. the in$lusi-e angle o' the thread sides.E)planation. N*+.

Question Number. 1. 5he tang o' a thread insert.Option A. ma/ le't it in the insert a'ter installation.Option %. is remo-ed #ith a hammer and a pun$h.Option (. must be remo-ed.(orre$t Ans#er is. ma/ le't it in the insert a'ter installation.E)planation. (AP 6 +ea'let 81! 3...

Question Number. 13. A thread insert ma/ be remo-ed b/.

Option A. a blade remo-al tool.Option %. a hammer and pun$h.Option (. a pre8#ind insertion tool.(orre$t Ans#er is. a blade remo-al tool.E)planation. (AA*Ps lea'let 81!, page 4, paragraph 3.3.

Question Number. 14. A metri$ s$re# thread angle is.Option A. < ".Option %. < ".Option (. 6! ".(orre$t Ans#er is. 6! ".E)planation. N*+.

Question Number. 1. Whi$h thread t/pe has the better -ibration resistan$e.Option A. A 'ine thread.Option %. A $ourse thread.Option (. (ourseness or 'ineness o' thread has no bearing on the -ibration resistan$e.(orre$t Ans#er is. A 'ine thread.E)planation. N*+.

Question Number. 16. Whi$h o' the 'ollo#ing thread designations is most 'atigueresistant.Option A. CN?.

Option %. CN(.Option (. CNI?.


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(orre$t Ans#er is. CNI?.E)planation. N*+.

Question Number. 1


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Option A. an 77 on the head.Option %. a raise ring on the head.Option (. or 3 rings on the head.(orre$t Ans#er is. or 3 rings on the head.E)planation. (ontiguous rings.

Question Number.


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Option (. @ui$0 release 'asteners at inspe$tion panels.(orre$t Ans#er is. @ui$0 release 'asteners at inspe$tion panels.E)planation. 2us 'asteners are @ui$0 release 'asteners.

Question Number. 14. 5he initials C.N.( #hen related to air$ra't bolts stands 'or.

Option A. Cnited National (ountersun0.Option %. Cni'ied National (oarse.Option (. Cni'ied National (entred.(orre$t Ans#er is. Cni'ied National (oarse.E)planation. CN( L Cni'ied National (ourse. CN? L Cni'ied National ?ine.

Question Number. 1. (apped nuts are used so.Option A. to pre-ent lea0s 'rom pipe ends.Option %. the part is not o-er tor@ued as the bolt tou$hes the $apti-e part 'irst.Option (. to ensure that it is dr/ bolted.(orre$t Ans#er is. the part is not o-er tor@ued as the bolt tou$hes the $apti-e part 'irst. O toensure that it is dr/ bolted.

E)planation. (apped nuts pro-ide an air'luid tight seal.

Question Number. 16. A bolt part number AN(1 #hen $ompared to a bolt part numberAN81 has.Option A. a less e)pensi-e design and produ$t $osts.Option %. a higher resistan$e to $orrosion.Option (. a higher pit$h thread.(orre$t Ans#er is. a higher resistan$e to $orrosion.E)planation. L $le-is bolt, L diameter in 16ths 916ths in;, ( L (orrosion resistant steel, 1 Llength in =ths 91= L 1


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Question Number. 1&. An aluminium allo/ bolt ma/ be identi'ied b/.Option A. its $olour 9d/ed bla$0;.Option %. the letter A stamped on the head.Option (. its $olour 9d/ed green;.(orre$t Ans#er is. its $olour 9d/ed green;.E)planation. %+83 ..

Question Number. !. A 9%ritish; 3= in$h dia. CN? bolt #ill ha-e the diameter $ode

letter.Option A. N.Option %. F.Option (. I.(orre$t Ans#er is. I.E)planation. %+83 5able .

Question Number. 1. An AN steel bolt is identi'ied b/.Option A. on head.Option %. on head.Option (. plain bolt.(orre$t Ans#er is. on head.

E)planation. %+8


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Option A. pre-ent o-ertightening due to the threaded portion being restri$ted b/ the $ap.Option %. to pro-ide a dr/ tor@ue Boint.Option (. to stop lea0s.(orre$t Ans#er is. to stop lea0s.E)planation. N*+.

Question Number. 6. A pin in a 'or0 end 'itting is subBe$ted to #hat loading.Option A. Shear.Option %. 5ensile.Option (. 5orsion.(orre$t Ans#er is. Shear.E)planation. N*+.

Question Number.


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Option %. the/ $an be remo-ed and reused again.Option (. the s@ueeed on $ollar installation pro-ides a more se$ure, tighter 'it.(orre$t Ans#er is. the/ $an be installed #ith ordinar/ hand8tools.E)planation. N*+.

Question Number. 33. 5he mar0ings on the head o' a 2us 'astener identi'/ the.Option A. bod/ diameter, t/pe o' head and length o' the 'astener.Option %. bod/ t/pe, head diameter and t/pe o' material.Option (. manu'a$turer and t/pe o' material.(orre$t Ans#er is. bod/ diameter, t/pe o' head and length o' the 'astener.E)planation. A letter identi'ies t/pe o' head, a number identi'ies bod/ diameter in 116 in$hin$rements and another number identi'ies stud length in 11!!ths in$h.

Question Number. 34. 5he 2us turnlo$0 'astener $onsists o' a stud, grommet, andre$epta$le. 5he stud length is measured in.Option A. si)teenths o' an in$h.Option %. tenths o' an in$h.

Option (. hundredths o' an in$h.(orre$t Ans#er is. hundredths o' an in$h.E)planation. N*+.

Question Number. 3. 5hreaded ri-ets 9i-nuts; are $ommonl/ used to.Option A. Boin t#o or more pie$es o' sheet metal #here shear strength is desired.Option %. atta$h parts or $omponents #ith s$re#s to sheet metal.Option (. Boin t#o or more pie$es o' sheet metal #here bearing strength is desired.(orre$t Ans#er is. atta$h parts or $omponents #ith s$re#s to sheet metal.E)planation. N*+.

Question Number. 36. Air$ra't bolts #ith a $ross or asteris0 mar0ed on the bolt8headare.Option A. made o' aluminium allo/.Option %. a standard steel bolts.Option (. $lose toleran$e bolts.(orre$t Ans#er is. a standard steel bolts.E)planation. N*+.

Question Number. 3


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Option %. $lass 'it 'or the threads.Option (. $lass 3 'it 'or the threads.(orre$t Ans#er is. $lass 3 'it 'or the threads.E)planation. N*+.

Question Number. 4!. 5he $age o' an *nstrument Mounting nut is made 'rom.Option A. steel.Option %. brass.Option (. phosphor brone.(orre$t Ans#er is. phosphor brone.E)planation. Standard A-iation Maintenan$e andboo0 Page


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Option A. bet#een spring and part.Option %. bet#een head and spring.Option (. under the nut.(orre$t Ans#er is. bet#een spring and part.E)planation. 5he plain #asher is to prote$t the sur'a$e o' the part 'rom the edge o' the spring#asher. %+6813 3.

Question Number. 4. o# man/ times $an /ou use a lo$0ing plate.Option A. Cntil all the tabs ha-e been bro0en o''.Option %. As long as it remains ser-i$eable.Option (. On$e onl/.(orre$t Ans#er is. As long as it remains ser-i$eable.E)planation. %+6813 .

Question Number. . Wire lo$0ing approa$h angles should not be less than.Option A. 4 ".Option %. &! ".

Option (. 1! ".(orre$t Ans#er is. 4 ".E)planation. %+6813


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Option (. the sha't to be shrun0 b/ $ooling.(orre$t Ans#er is. some sort o' dri-ing 'or$e.E)planation. A press 'it re@uires some 'orm o' dri-ing 'or$e.

Question Number. 11. A non metalli$ lo$0nut is.

Option A. ne-er used o-er ! "?.Option %. ne-er [email protected] (. ne-er re8used.(orre$t Ans#er is. ne-er used o-er ! "?.E)planation. ! "? 91! "(; is the ma)imum temperature 'or n/lon or 'ibre insert nuts.

Question Number. 1. Whi$h $an be re8used.Option A. +o$0ing plate, $ir$lip, spring #asher.Option %. Sha0e proo' #asher, spring #asher, lo$0ing plate.Option (. 5ab #asher, $ir$lip, lo$0ing plate.(orre$t Ans#er is. +o$0ing plate, $ir$lip, spring #asher.E)planation. +ea'let 8 3.3.

Question Number. 13. A tab #asher has been remo-ed a'ter 'itment 'or a short time 'rom anon essential s/stem, the tab #asher ma/ be.Option A. re8used.Option %. re8used i' a spare is not a-ailable.Option (. not re8used.(orre$t Ans#er is. not re8used.E)planation. used unless it is multi8tab and there are unused tabs 8 old tabs to be bro0en o''. %+6813 3..3.

Question Number. 14. 5aper pins are subBe$t to #hat loads.

Option A. 5ensile.Option %. (ompressi-e.Option (. Shear.(orre$t Ans#er is. Shear.E)planation. 5aper pins $an onl/ ta0e shear loads. A(43


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(orre$t Ans#er is. sti'' nut.E)planation. N*+.

Question Number. 1

Question Number. !. Split pins.Option A. ma/ be used onl/ on$e.Option %. $an be used more than on$e but depends on the material o' the split pin.

Option (. ma/ be used more than on$e.(orre$t Ans#er is. ma/ be used onl/ on$e.E)planation. (AA*Ps +ea'let 8, ..

Question Number. 1. o# is the lo$0ing 'eature o' the 'ibre8t/pe lo$0nutobtained.Option A. %/ a 'ibre insert held 'irml/ in pla$e at the base o' the load $arr/ing se$tion.Option %. %/ the use o' an unthreaded 'ibre lo$0ing insert.Option (. %/ ma0ing the threads in the 'ibre insert sl

module 06. materials & hardware

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