Q.1) The property of a material which has the greatest influence on welding distortion is its

 

 A.

Yield strength (Your Answer)

 B.

Coefficient of thermal expansion (Answer)

 C.

Elastic modulus

 D.

Coefficient of thermal conductivity

 Q.2) EN ISO 5817 (Level C) specifies that the limit for the diameter (D) of a single

pore in a weld is: D<0.3s, but max. 4mm where s=material thickness. For which of the following situations is the pore acceptable?

   A. s=20mm, measured pore diameter = 5mm  B. s=15mm, measured pore diameter = 4.5mm  C. s=10mm, measured pore diameter = 3mm (Your Answer)  D. s=10mm, measured pore diameter = 3.5mm Q.3) When welding thin plate distortion can be minimised by:

 

 A.

Welding from both sides

 B.

Using U preparations rather than V types

 C.

Using strongbacks (Your Answer)

 D.

Using back-step welding (Answer)

 Q.4) Which of the following procedures would be expected to produce the least

distortion in a 15mm straight butt weld?   A. TIG weld, single-sided, multi-pass  B. MMA weld, single-sided, multi-pass  C. MMA weld, double-sided, multi-pass  D. SAW weld, 1 pass per side (Your Answer) 

Q.5) For GMAW the burn-off rate of the wire is directly related to:

 

 A.

Stick-out length

 B.

Wire feed speed (Your Answer)

 C.

Arc voltage

 D.

Travel speed

 Q.6) The use of low carbon austenitic stainless steels and stabiliser stainless steels

will minimise the risk of:   A. HAZ cracking

  B. Weld decay (Answer)  C. Weld metal cracking (Your Answer)  D. Distortion 

Q.7) A macrosection is particularly good for showing:

 

 A.

The weld metal HAZ microstructure (Your Answer)

 B.

Overlap (Answer)

 C.

Joint hardness

 D.

Spatter

 Q.8) To improve resistance to service failure caused by cyclic loading, it is good

practice to:   A. Use low heat input welding (Your Answer)  B. Use steel with a low CEV  C. Ensure there are no features that give high stress concentration(Answer)  D. PWHT the fabrication 

Q.9) Lamellar tearing has occurred in a steel fabrication. What technique could have been used to find it before the weld was made?

 

 A.

X-ray examination

 B.

Liquid penetrant examination

 C.

Ultrasonic examination

 D.

It could not have been found by any inspection method (Your Answer)

Q.10) Which type of submerged arc welding flux is susceptible to moisture pick-up?

   A. Neutral  B. Agglomerated (Your Answer)  C. Fused  D. Are all about the same 

Q.11) Initiation of a TIG arc using high frequency spark may not be allowed because it:

 

 A.

Often causes tungsten inclusions

 B.

Can damage electronic equipment (Answer)

 C.

Is an electrical safety hazard (Your Answer)

 D. Often causes stop/start porosity

Q.12) The risk of hydrogen cracking is greater when MMA welding:   A. C-Mn Steels (Your Answer)  B. Austenitic Stainless Steels

  C. Low Alloy Steels For Elevated Temperature Service(Answer)  D. Low Carbon Steels For Cryogenical Service 

Q.13) BS EN ISO 5817 (Level B) specifies the limit for excess weld metal (h) on a butt weld as: h<1mm+0.1b, but max. 5mm, b= weld width. In which of the following situations is the measured excess weld metal acceptable?

   A. b = 10 measured excess weld metal = 2.5mm (Your Answer)  B. b = 20 measured excess weld metal = 3.5mm  C. b = 35 measured excess weld metal = 4.5mm (Answer)  D. b = 45 measured excess weld metal = 5.5mm

Q.14) Which of the following is associated with SAW more often than it is with MMA welds?

   A. Hydrogen cracking in the HAZ  B. Solidification cracking in the weld metal (Your Answer)  C. Reheat cracking during PWHT  D. Lamellar tearing 

Q.15) The presence of iron sulphides in a weld bead may cause:

 

 A.

Solidification cracking (Answer)

 B.

Hydrogen cracking

 C.

Lamellar tearing (Your Answer)

 D.

Weld decay

Q.16) Transfer of material identification by hard stamping is sometimes not allowed for high integrity applications because it:

   A. Is too slow  B. Can be a safety hazard  C. May damage the material (Your Answer)  D. Causes problems with coating operations. 

Q.17) For MMA welding of a 60mm wall nozzle to a 100mm wall vessel shell, preheat temperatures should be checked:

 

 A.

Before welding starts/restarts

 B.

On the shell and nozzle

 C.

At points at least 75mm from the joint edge

 D.

All of the above (Your Answer)

 Q.18) Which type of SAW flux is susceptible to breaking down into fine particles

during circulation?   A. Fused  B. Neutral  C. Alloyed  D. Agglomerated (Your Answer) 

Q.19) Typical temperature used for normalising a C-Mn steel plate are:

 

 A.

600-650ºC

 B.

1000-1100ºC

 C.

700-800ºC (Your Answer)

 D.

880-920ºC (Answer)

 Q.20) Which of the following is a suitable shielding gas for FCAW of stainless steels?   A. 100% Argon (Your Answer)  B. 70% Argon + 30% He  C. Argon + 5% Hydrogen  D. Argon + 20% CO2 (Answer) 

Q.21) A STRA test is used to measure the:

 

 A.

Tensile strength of the welded joint (Your Answer)

 B.

Level of residual stress in butt joints

 C.

Fracture toughness of the HAZ

 D.

Through-thickness ductility of a steel plate (the Z direction)(Answer)

 Q.22) A Large grain size in the HAZ of a C-Mn Steel weld joint may have:   A. Low ductility  B. Low toughness (Your Answer)  C. High toughness  D. High tensile strength 

Q.23) A crack running along the centreline of a weld bead could be caused by:

 

 A.

Use of damp flux

 B.

Lack of preheat

 C.

Arc voltage too high (Your Answer)

 D. Weld bead too deep and very narrow (Answer)

Q.24) A suitable gas/gas mixture, for GMAW for aluminium is:   A. 100% CO2  B. 100% Argon (Answer)  C. 80% Argon + 20% CO2  D. 98% Argon + 2% 02 (Your Answer) 

Q.25) The first procedure prepared for a Weld Procedure Qualification test is a:

 

 A.

pWPS (Answer)

 B.

WPS (Your Answer)

 C.

WPQR

 D.

WPAR

 Q.26) The maximum hardness in the HAZ of a steel will increase if the:   A. Heat input is increased (Your Answer)  B. CEV is increased (Answer)  C. Joint thickness is decreased  D. Basic electrodes are used 

Q.27) A C-Mn steel is being welded by MMA and the electrode run-out lengths that have been used are much shorter than specified by the WPS. This deviation may give:

 

 A.

Increased risk of hydrogen cracking

 B.

Increased risk of solidification cracking (Your Answer)

 C.

Lower values of HAZ toughness (Answer)

 D.

Higher values of HAZ hardness

 Q.28) To measure arc voltage accurately it is recommended that the voltmeter should

be connected:   A. Across the arc and as near as practical to the arc (Your Answer)  B. Across the power source terminals prior to arc initiation  C. Across the power source terminals during the welding operation  D. Anywhere in the circuit 

Q.29) Preheating a low alloy steel prior to welding to minimise the risk of:

 

 A.

Porosity

 B.

Excessive distortion

 C.

HAZ cracking (Answer)

 D.

Lack of fusion (Your Answer)

 Q.30)Which of the following would be considered to be high heat input welding?   A.550J/mm (Your Answer)  B. 55J/mm  C.5.5J/mm  D.5KJ/mm (Answer)

Q.31) Which of the following butt-weld preparations is usually the most susceptible to lack of sidewall fusion during the manual arc process? 

 

 A.

A double-U butt (Your Answer)

 B.

A single-V butt.

 C.

A double-V butt.

 D.

It is not normally a defect associated with the MMA welding process.

 Q.32) What is the leg length of a fillet weld?   A. the distance from the toe to face.  B. the distance from the root to the toe. (Your Answer)  C. Its 0.7 of the design thickness.  D. Both b and c 

Q.33)  What is the thickness of a fillet weld ( equal leg lengths )?

 

 A.

The distance from the toe to the face. (Your Answer)

 B.

The distance from the root to the face centre. (Answer)

 C.

The distance from the root to the toe.

 D.

The distance from toe to toe.

 Q.34) Compound welds:   A. Always contain butt and fillet welds

 B. joints which have combinations of welds made by different welding

processes  C. Combinations between two different weld types (Your Answer)  D. All of the above. 

Q.35) A duty not normally undertaken by a welding inspector is to:

 

 A.

Check the condition of the parent material.

 B.

Check the condition of the consumables.

 C.

Measure residual stress. (Your Answer)

 D.

Check calibration certificates.

 Q.36) Under most conditions which of the following welding positions will deposit the

most weld metal.   A. PG  B. PE  C. PC  D. PA (Your Answer) 

Q.37)  What meant by the term crater pipe:

 

 A.

Another term for concave root.

 B.

Another term given for a burn through.

 C.

A type of gas pore found in the weld crater.

 D.

A shrinkage defect found in the weld crater. (Your Answer)

 Q.38) What is meant by the term weld junction?   A. The area containing the HAZ and weld metal.  B. The weld metal and parent metal.  C. The boundary between the fusion zone and the HAZ. (Your Answer)

 D. The part of the weld which has undergone metallurgical changes due to the

heat from welding. 

Q.39) The strength of a fillet weld is primary controlled by:

 

 A.

Leg length.

 B.

Design throat thickness. (Your Answer)

 C.

Actual throat thickness.

 D.

All of the above.

 Q.40) Which of the following is applicable for none planar defects?   A. They are always repaired.  B. Their existence will result in the removal of the entire weld.  C. They are not usually as significant as planar defects. (Your Answer)  D. They can only be detected using radiograph . 

Q.41) Which of the following welding processes/technique is likely to be used for the repair welding of localised porosity in butt weld?

 

 A.

MMA, PG position.

 B.

Mechanised MAG.

 C.

Submerged arc.

 D.

None of the above. (Your Answer)

 Q.42) When measuring the welding parameters with the MMA welding process for the

purpose of approving a welding procedure, the welding Inspector should measure the voltage:

   A. As close to welding arc as possible. (Your Answer)  B. Anywhere along the welding cable.  C. Always from the voltmeter on the welding plant.  D. As near to The welding terminals as possible. 

Q.43) In the MMA welding process, which of the following is most likely to be caused by a welder with a poor technique? 

 

 A.

Deep weld craters/crater cracks. (Your Answer)

 B.

Copper inclusions

 C.

Hydrogen cracks

 D.

All of the above

 Q.44) Root concavity is caused by:   A. Excessive back purge pressure and entrapped gas.  B. Excessive back purge pressure and very high heat inputs.  C. Excessive root grinding and a slow travel speed.  D. Excessive root grinding and excessive back purge pressure.(Your Answer) 

Q.45) When inspecting a critical component, the toes of a weld must be:

 

 A.

Always ground flush.

 B.

Must always overlap at least 1.5 mm onto the parent material.

 C.

Must always be inspected using a crack detection method ( MPI,DPI ).

 D. None of the above can be selected – specification requirements

unknown (Your Answer)

 Q.66) When carrying out visual inspection, the specification makes no mention of the

requirements for visual inspection, in this situation what shroud you do?   A. Carry out normal visual inspection.  B. Seek advice from higher authority. (Your Answer)  C. Carry out visual inspection.  D. Re–write the requirements of the specification. 

Q.47) Under most circumstances, which of the following do you consider to be duties of a welding inspector?

 

 A.

The supervision of welders.

 B.

Procedure writing.

 C.

Qualifying welders. (Your Answer)

 D.

All of the above.

 Q.48) 18.    Which of the following is most likely to cause a burn through.   A. Root gap too small. (Your Answer)  B. Travel speed too fast.  C. Root face too small. (Answer)  D. All of the above. 

Q.49) In an arc welding process, which of the following is the correct term used for the amount of weld metal deposited per minute?

 

 A.

Filling rate.

 B.

Deposition rate. (Your Answer)

 C.

Weld deposition.

 D.

Weld duty cycle.

 Q.50) What is the term given for the area of a welded joint outside the weld metal that

has undergone microstructural changes?   A. Heat affected zone. (Your Answer)  B. The weld zone  C. Fusion zone.  D. All of the above terms may be used.

Q.51) All things contain imperfections, but is only when they fall outside the level ofacceptance they should be termed?

 

 A.

Discontinuity

 B.

Defect (Your Answer)

 C.

Mechanical damage

 D.

Welding imperfections

 Q.52) A singular gas filled cavity that is= or more than 1.6 mm in diameter is termed?   A. Cavity  B. Cluster porosity  C. Blow hole (Your Answer)  D. Rounded porosity 

Q.53) Lack of fusion imperfections are defined as?

 

 A.

Lack of union between two adjacent areas of material (Your Answer)

 B.

Not cleaning out slag

 C.

Incorrect electrode manipulation in the final run

 D.

Incorrect set up

 Q.54) What should happen to spatter before visual inspection is carried out?   A. Spatter is not a problem for visual inspection

 B. Spatter that is more than 2 mm need not be cleaned for visual inspection

(Your Answer)  C. Spatter should be cleaned off before visual inspection  D. Spatter will not have any affect on the weld or the base material 

Q.55) Undercut can be defined as one of the following?

 

 A.

Concavity in the root of the weld

 B.

Crater in the fill of the weld

 C.

An oxide within the weld

 D.

Depression at the toe of the weld (Your Answer)

 Q.56) Excess penetration is often caused by which of the following?   A. Too high a welding current  B. Slow travel speed  C. Large root gap  D. All of the above (Your Answer)

Q.57) BS EN 970 CODE........?

 

 A. Non Destructive Examination Of Fusion Welds - Visual Inspection (Your

Answer)

 B.

Non Destructive Examination Of Fusion Welds - Penetrant Testing

 C.

Non Destructive Examination Of Fusion Welds - RadiographicTesting

 D. Non Destructive Examination Of Fusion Welds - Magnetic Particle

Testing

 Q.58) Welding Inspector Should........   A. Be familiar with relevant standards  B. Be informed about the welding procedures used  C. Have good vision  D. All of the above (Your Answer) 

Q.59) In accordance with EN 473, a welding inspector should check his vision in every........

 

 A.

6 months

 B.

12 Months (Your Answer)

 C.

3 weeks

 D.

Not necessary

 Q.60) BS 970 code for visual examination requires CSWIP 3.1 for visual inspection of

welds.   A. True (Your Answer)  B. False (Correct Answer) 

Q.61) Minimum illumination required for visual inspection?

 

 A.

3500 lux

 B.

500 lux

 C.

100 lux

 D.

350lux (Your Answer)

 Q.62) As a CSWIP 3.1 inspector, you found that the specification available for

inspection is wrong as per your experience. What will you do?   A. Will re write the specification  B. Will inform to higher authorities (Your Answer)  C. Will inspect as per your experience  D. Will inspect as per the available specification

.63)  Applying preheat when welding carbon manganese steel is normally done to avoid:

 

 A.

a) Slag inclusions

 B.

b) Hydrogen cracking (Your Answer)

 C.

c) Lack of sidewall fusion

 D.

d) Porosity

 Q.64) Which of following mechanical properties of a weld in carbon manganese steel

is most affected if the heat input per unit length of weld is excessively high?   A. a) Elongation  B. b) Tensile strength  C. c) Hardness

  D. d) Toughness (Your Answer) 

Q.65) You observe centerline cracking a weld that as been made one of five work stations each making similar components. The first action to take is:

 

 A.

a) Impound all welding consumables

 B.

b) Report the occurrence to high authority (Your Answer)

 C.

c) Stop all welding

 D.

d) Call for full NDT checks

 Q.66) Which of the following defects is unlikely to be found by visual

inspection.             A. a) Linear misalignment  B. undercut (Your Answer)  C. overlap  D. d) Linear slag inclusion (Answer)

 

Q.67) Which of the following welding processes uses a resisitive heating system to achieve weld metal deposition.

   A. a) Manual metal arc welding  B. b) Submerged-arc welding (Your Answer)  C. c) Electro slag welding  D. d) Resistance spot welding (Answer)

Q.68) When ‘hydrogen control’ is specified for a manual metal arc welding project the electrode would normally be:

 

 A.

Cellulosic

 B.

Iron oxide

 C.

Acid

 D.

Basic (Your Answer)

 Q.69) You would certainly recognise a hydrogen controlled flux covered electrode

from its   A. Colour  B. Length  C. Trade name  D. BS639/AWS code letter (Your Answer) 

Q.70) When manual metal arc welding is being carried out on an open construction site, which group of welders are most likely to require continuous monitoring?

 

 A.

Concrete shuttering welding teams

 B.

Pipe welding teams (Your Answer)

 C.

Plater welders

 D.

Plant maintenance welders

 Q.71) You notice manual metal arc electrodes, stripped of flux, are being used as filler

wire for TIG welding. You would object because:

   A. It is too expensive  B. The wire would be too thick

 C. The metal composition may be wrong

(Your Answer)  D. The wire is too short 

Q.72) When open site working, serious porosity in metal arc welds is brought to your attention. What would you investigate?

 

 A.

Electrode type

 B.

Power plant type

 C.

Electrode storage (Your Answer)

 D.

Day temperature

 Q.73) The steel composition in a structural contract is changed from 0.15% carbon

0.6% manganese, to 0.2% carbon 1.2% manganese. This might influence the incidence of:

   A. Porosity  B. Cracking in the weld area (Your Answer)  C. Undercut for fillet welds  D. Lack of fusion defects 

Q.74) One of the following alloys is non-magnetic - which?

 

 A.

4.0% chromium molybdenum

 B.

12.0% chromium

 C.

Austenitic stainless steel (Your Answer)

 D.

9.0% nickel steel

 Q.75) When TIG welding austenitic stainless steel pipe, argon gas backing is called

for. This is to:

   A. Prevent oxidation (Your Answer)  B. Prevent underbead cracking

  C. Prevent porosity  D. Control the penetration bead shape 

Q.76) Pre-heating a carbon steel manual metal arc welding is carried out to minimise the risk of:

 

 A.

Scattered porosity

 B.

Worm hole porosity

 C.

Parent metal cracking (Your Answer)

 D.

Lack of penetration

 Q.77) In UK practice, BS499 specifies that the drawing dimension quoted for a fillet

weld is the:

   A. Leg length (Answer)  B. Throat thickness (Your Answer)  C. Weld width  D. Actual throat thickness 

Q.78) For open site manual metal welding the following equipment is available. Which would you choose for safe site working?

 

 A.

Single operator transformer

 B.

Multi operator transformers

 C.

AC/DC composite power unit

 D.

Diesel engine driven motor generator (Your Answer)

 Q.79) If submerged arc welding is used to make butt welds, which would you be most

critical of?

   A. The root gap tolerance (Your Answer)  B. The angle of preparation  C. The root face width  D. The gas cut finish 

Q.80) Preheating for arc welding applies to:

 

 A.

Assembly welding only

 B. Assembly and tack welding

(Your Answer)

 C.

Joints over 25 mm thick only

 D.

Cruciform welds only

 Q.81) Which one of the following statements is correct?

   A. Preheating increases hardness  B. Preheating increases cooling  C. Preheating increases dilution (Your Answer)  D. Preheating increases shrinkage stress 

Q.82) You see a welder using an oxy-acetylene flame with a long feathered inner cone. What would be the effect of this on a carbon steel?

 

 A. The weld would be hard and brittle

(Your Answer)

 B.

The weld could be too soft

 C.

There will be no effect on the weld

 D.

The weld will have undercut

 Q.83) A welder qualification test is to verify: 

 A. The skill of the welder

(Your Answer)  B. The quality of the materials  C. The non-destructive test procedures  D. The manufacturing methods 

Q.84) A fabricating procedure calls for fillet welds to be 'blended in' by grinding. This influences:

 

 A.

HAZ. cracking

 B.

Fatigue life (Your Answer)

 C.

Residual stress

 D.

Yield strength

 Q.85) During CO2 welding, the arc length is most likely to be affected by:   A. The wire diameter

 B. The current return connections

(Your Answer)  C. The gas flow rate  D. The torch to work angle 

Q.86) Bend test specimens have been taken from a 25 mm thick carbon steel butt weld. Which would show lack of inter-run fusion?

 

 A.

Side bend (Your Answer)

 B.

Root bend

 C.

Face bend

 D.

Guided bend

 Q.87) Lamellar tearing has occurred in a steel fabrication. BEFORE welding could it

have been found by:

   A. X-ray examination  B. Dye penetrant  C. Ultrasonic examination (Answer)  D. It would not have been found by any inspection method (Your Answer) 

Q.88) You are to oversee the arc welding of some machine fittings and find that they are cadmium plated. Would you:

 

 A.

Permit it to proceed

 B.

Permit it to proceed with fume extraction

 C. Stop the operation at once

(Your Answer)

 D.

Advise the welder to drink milk and proceed

 Q.89) One of the reasons for excluding hydrogen from the weld metal is to prevent the

weld from:

 

 A. Cracking

(Your Answer)  B. Cooling slowly  C. Cooling quickly  D. Expanding 

Q.90) When a metal regains its original shape when a stress acting upon it is removed, the metal is said to have:

 

 A.

Ductility

 B.

Plasticity

 C.

Malleability

 D.

Elasticity (Your Answer)

 Q.91) Proof stress is used when non-ferrous metals are undergoing tensile tests to

determine the equivalent:

   A. Tenacity

  B. Elasticity  C. Yield strength (Answer)  D. Tensile strength (Your Answer) 

Q.92) To test a component for vibrational loading, a suitable mechanical test would be:

 

 A.

Impact (Your Answer)

 B.

Tensile

 C.

Compressive

 D.

Fatigue (Answer)

 Q.93) The main reason for pre-heating medium and high carbon steels before cutting

by oxy-fuel gas technique is to:

   A. Improve the quality of the cut  B. Increase the cutting speed  C. Refine the grain structure

 D. Prevent hardening and cracking

(Your Answer) 

Q.94) One purpose of a microscopic examination of a weld is to establish the:

 

 A.

Strength of the weld

 B.

Number of alloying elements (Your Answer)

 C. Grain size

(Answer)

 D.

Number of runs used

 Q.95) The predominant structure of an hyper-eutectoid steel that has been quenched at

above its upper critical point will be:

   A. Austenite  B. Martensite (Your Answer)  C. Troostite  D. Sorbite 

Q.96) When weld metal refinement takes place in a multi-run deposit, it is known by the term:

 

 A.

Weld annealing

 B. Weld refining

(Your Answer)

 C.

Weld normalising

 D.

Weld recrystallisation

 Q.97) One advantage of metal gas arc shielded welding is:

   A. Can be used in draughty locations without protection  B. Produces a deposit low in hydrogen content (Your Answer)  C. Any welding position can be welded with spray transfer  D. Fine spatter at nozzle restricting gas flow

Q.98) Lamellar tearing has occurred in a steel fabrication. What technique could have been used to find it before the weld was made?

 

 A.

X-ray examination

 B.

Liquid penetrant examination

 C.

Ultrasonic examination (Your Answer)

 D.

It could not have been found by any inspection method(Answer)

 Q.99) Which of the following would be considered to be high heat input welding?   A. 550J/mm  B. 55J/mm  C. 5.5J/mm (Your Answer)  D. 5KJ/mm (Answer) 

Q.100) Which type of submerged arc welding flux is susceptible to moisture pick-up?

 

 A.

Neutral

 B.

Agglomerated (Your Answer)

 C.

Fused

 D.

Are all about the same

 Q.101) The maximum hardness in the HAZ of a steel will increase if the:   A. Heat input is increased  B. CEV is increased (Your Answer)  C. Joint thickness is decreased  D. Basic electrodes are used 

Q.102) A Large grain size in the HAZ of a C-Mn Steel weld joint may have:

 

 A.

Low ductility

 B.

Low toughness (Your Answer)

 C.

High toughness

 D.

High tensile strength

 Q.103) To measure arc voltage accurately it is recommended that the voltmeter should

be connected:   A. Across the arc and as near as practical to the arc (Your Answer)  B. Across the power source terminals prior to arc initiation  C. Across the power source terminals during the welding operation  D. Anywhere in the circuit 

Q.104) Which of the following is a suitable shielding gas for FCAW of stainless steels?

 

 A.

100% Argon (Your Answer)

 B.

70% Argon + 30% He

 C.

Argon + 5% Hydrogen

 D.

Argon + 20% CO2 (Answer)

 Q.105) Transfer of material identification by hard stamping is sometimes not allowed

for high integrity applications because it:   A. Is too slow  B. Can be a safety hazard  C. May damage the material (Your Answer)  D. Causes problems with coating operations. 

Q.106) A macrosection is particularly good for showing:

 

 A.

The weld metal HAZ microstructure

 B.

Overlap (Your Answer)

 C.

Joint hardness

 D.

Spatter

 Q.107) To improve resistance to service failure caused by cyclic loading, it is good

practice to:   A. Use low heat input welding  B. Use steel with a low CEV (Your Answer)  C. Ensure there are no features that give high stress concentration(Answer)  D. PWHT the fabrication 

Q.108) Typical temperature used for normalising a C-Mn steel plate are:

 

 A.

600-650ºC

 B.

1000-1100ºC

 C.

700-800ºC

 D.

880-920ºC (Your Answer)

 Q.109) Which of the following procedures would be expected to produce the least

distortion in a 15mm straight butt weld?   A. TIG weld, single-sided, multi-pass  B. MMA weld, single-sided, multi-pass  C. MMA weld, double-sided, multi-pass  D. SAW weld, 1 pass per side (Your Answer) 

Q.110) The risk of hydrogen cracking is greater when MMA welding:

 

 A.

C-Mn Steels

 B.

Austenitic Stainless Steels

 C.

Low Alloy Steels For Elevated Temperature Service (Your Answer)

 D.

Low Carbon Steels For Cryogenical Service

 Q.111) A STRA test is used to measure the:   A. Tensile strength of the welded joint  B. Level of residual stress in butt joints  C. Fracture toughness of the HAZ (Your Answer)  D. Through-thickness ductility of a steel plate (the Z direction)(Answer) 

Q.112) For GMAW the burn-off rate of the wire is directly related to:

 

 A.

Stick-out length

 B.

Wire feed speed (Your Answer)

 C.

Arc voltage

 D.

Travel speed

 Q.113) When welding thin plate distortion can be minimised by:   A. Welding from both sides  B. Using U preparations rather than V types  C. Using strongbacks

  D. Using back-step welding (Your Answer) 

Q.114) Which type of SAW flux is susceptible to breaking down into fine particles during circulation?

 

 A.

Fused

 B.

Neutral

 C.

Alloyed

 D.

Agglomerated (Your Answer)

 Q.115) The property of a material which has the greatest influence on welding

distortion is its   A. Yield strength  B. Coefficient of thermal expansion (Your Answer)  C. Elastic modulus  D. Coefficient of thermal conductivity 

Q.116) A C-Mn steel is being welded by MMA and the electrode run-out lengths that have been used are much shorter than specified by the WPS. This deviation may give:

 

 A.

Increased risk of hydrogen cracking

 B.

Increased risk of solidification cracking (Your Answer)

 C.

Lower values of HAZ toughness (Answer)

 D.

Higher values of HAZ hardness

 Q.117) The use of low carbon austenitic stainless steels and stabiliser stainless steels

will minimise the risk of:   A. HAZ cracking  B. Weld decay (Your Answer)  C. Weld metal cracking  D. Distortion 

Q.118) Preheating a low alloy steel prior to welding to minimise the risk of:

 

 A.

Porosity

 B.

Excessive distortion

 C.

HAZ cracking (Your Answer)

 D.

Lack of fusion

 Q.119) A suitable gas/gas mixture, for GMAW for aluminium is: 

  A. 100% CO2  B. 100% Argon (Answer)  C. 80% Argon + 20% CO2 (Your Answer)  D. 98% Argon + 2% 02 

Q.120) BS EN ISO 5817 (Level B) specifies the limit for excess weld metal (h) on a butt weld as: h<1mm+0.1b, but max. 5mm, b= weld width. In which of the following situations is the measured excess weld metal acceptable?

 

 A.

b = 10 measured excess weld metal = 2.5mm (Your Answer)

 B.

b = 20 measured excess weld metal = 3.5mm

 C.

b = 35 measured excess weld metal = 4.5mm (Answer)

 D.

b = 45 measured excess weld metal = 5.5mm

 Q.121) Which of the following is associated with SAW more often than it is with

MMA welds?   A. Hydrogen cracking in the HAZ (Your Answer)  B. Solidification cracking in the weld metal (Answer)  C. Reheat cracking during PWHT  D. Lamellar tearing 

Q.122) The first procedure prepared for a Weld Procedure Qualification test is a:

 

 A.

pWPS (Your Answer)

 B.

WPS

 C.

WPQR

 D.

WPAR

 Q.123) A crack running along the centreline of a weld bead could be caused by:   A. Use of damp flux  B. Lack of preheat  C. Arc voltage too high  D. Weld bead too deep and very narrow (Your Answer) 

Q.124) EN ISO 5817 (Level C) specifies that the limit for the diameter (D) of a single pore in a weld is: D<0.3s, but max. 4mm where s=material thickness. For which of the following situations is the pore acceptable?

 

 A.

s=20mm, measured pore diameter = 5mm

 B.

s=15mm, measured pore diameter = 4.5mm

 C.

s=10mm, measured pore diameter = 3mm (Your Answer)

 D.

s=10mm, measured pore diameter = 3.5mm

 

Q.125) The presence of iron sulphides in a weld bead may cause:   A. Solidification cracking (Answer)  B. Hydrogen cracking (Your Answer)  C. Lamellar tearing  D. Weld decay 

Q.126) Initiation of a TIG arc using high frequency spark may not be allowed because it:

 

 A.

Often causes tungsten inclusions

 B.

Can damage electronic equipment (Your Answer)

 C.

Is an electrical safety hazard

 D.

Often causes stop/start porosity

 Q.1277 For MMA welding of a 60mm wall nozzle to a 100mm wall vessel

shell, preheat temperatures should be checked:

 

 A.

Before welding starts/restarts

 B.

On the shell and nozzle

 C.

At points at least 75mm from the joint edge

 D.

All of the above (Your Answer)

Q.128) Weld Joint in which the parent materials have significant differences in mechanical properties and/or chemical composition

 

 A.

Homogeneous Joint

 B.

Dissimilar JOint (Your Answer)

 C.

Heterogeneous Joint

 D.

None Of These

 Q.129) Weld Joint in which the parent material and weld metal have significant

differences in mechanical properties and/or chemical composition   A. Homogeneous Joint (Your Answer)  B. Dissimilar Joint  C. Heterogeneous Joint (Answer)  D. All of These 

Q.130) Weld Joint in which the parent material and weld metal have no significant differences in mechanical properties and/or chemical composition

 

 A.

Dissimilar Joint

 B.

Homogeneous Joint (Your Answer)

 C.

Heterogeneous Joint

 D.

None Of These

 Q.132) The Boundary between the weld metal and HAZ   A. Weld Zone  B. Weld Junction (Your Answer)  C. Haz  D. None Of these 

Q.133) A butt joint has how many toes?

 

 A.

2

 B.

4 (Your Answer)

 C.

0

 D.

1

 Q.134) Land is term used with?   A. J and U joint (Your Answer)  B. Fillet Weld  C. Single V groove  D. All of these 

Q.135) Z=1.414 x a, this formula is not valid for which type of fillet weld

 

 A.

Mitre type

 B.

Convex Type

 C.

Concave Type (Your Answer)

 D.

Valid for all type of fillets

 Q.136) Which type of fillet weld is preferred for cyclic loading conditions?   A. Mitre Type  B. Convex Type  C. Concave Type (Your Answer)

  D. Any of the above 

Q.137) For deep penetration fillet welds symbol used for throat thickness is

 

 A.

z

 B.

a

 C.

s (Your Answer)

 D.

none of these

 Q.138) Actual Throat Thickness of a weld is   A. Design Throat Thickness + Excess weld metal (Your Answer)  B. Design Throat Thickness - Excess weld metal  C. Design Throat Thickness  D. None of these