RQII No. ......................

Total No. of Questions : 09]

'.j., [Total No. of Pages: 04

B.Tech. (Sem. -3rd)

MACHINE DRAWINGSUBJECT CODE: PE -203

. .

Paper ID : [A0203]

[Note: Please fill subject code and paper ID on OMR]

Time: 03 Hours

Instruction to Candidates:

1) Section -A is Compulsory.

2) Attemptany Fou.rquestionsfrom Section- B.3) Attempt any Two questions'from SectioR- C. ~

Q1)

Maximum Marks: 60

Section -A

(10 X 2 =20)

a)

b)

c) ,

d)

e)

t)

g)

h)

i)

j)

What is engineering drawing?

Name the different types of sections.

Why dimensioning is necessary?

Draw a symbol of single V-butt welding.

Draw the symbol of third angle projection~.

Name the different types of couplings,

What is the function' of cross-head?

What is an isometric projection?

What is the size of A4 sheet?

Sketch the convention of a centre line.

Section -B

. (4 x 5 =20)

Q2) (a) .. State the parts ~hich are not to be shown in sectiqn, althoughthe sectionplane 'may cut them.

(b) Show the convention representation 'of plywood, w~x and kerosene.

Q3) What are multi start threads? Where these ar~'used' and why?. .

Q4) What is the difference between ~sometric and.orthographic projections? - .

M-J88/1859} P.T.o. .

(25) Make the freehand sketches of the (a) single rivetedjoint (b) welded joint.

Q6} Twoviews of an I.C. engine piston are given in Figure 1. Draw its front vi~~full in section. ~

Lat"""),.

,"f'ii

2.5

-,-0 Q)

~.:10 .. L .

Figure 1

M-188 2

Section - C

. (2 XJ 0 =20)

L7) Figure 2 shows the detail drawing of an, expansion joint. Assemble the partsand draw the followingviews in first angle projections: '

(a) Front'view lower half in section.(b) Right side view.Dimensionthe views completely.

..r

"'"

,

...:z; ...

-"' gri

Jt.j

'~

!1~!!--c.:= ,..!..l1ill<DI2QID' 'c.!..1:2ff

~HOlE5.~I~EQUAlLY SPACED.~~Uif'.t;J2 OFF CENTRE lINES

rr.'~ ,'".,-err7/7?,"," ,.,

V

SPA'<.Eo. rrt'T\6 EQ\JAI~, ~"~4>;-P.~b-:- ~~ r

NUT M.S-. - ((j~" IdlU

,

=1-re

/I.IL_~I -I eII ,

"Tn7"C-CT'.'7:='~~0:-'-"" '0''',' """,,? /n~ ~;-o-;~. .

!Q.-~~ffi=,-300 ' .1.

---'--

<S> eJ.eE ~L!:QEf

Figure 2

'Q8) From the details ofscrewj'ack shown in Figure 3, draw the Jollowing views ofthe assembly in first angle projections:(a) Frontview full section.(b) Top view.Also make the parts list and bill of materials. '

.M-188 3

..i..:,.1

'I

Figure 3

~-'

-0 <i).

~.' ~',

/ 51I

.

.

. .Q9) Figure 4 shows the pictorial view of a'FOOT STEP BEARING

Draw to a conventional scale the following:(a) Full sectional ITontview(b) Top View.

Figllre4PI~cf>31 lONG 10

M-J88DDD

4