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Roll No. Total No. of Pages : 07Total No. of Questions : 09

B.Tech. (AE) (Sem.–3rd)MACHINE DRAWING

Subject Code : BTAE-306 (2011 Batch)Paper ID : [A1156]

Time : 3 Hrs. Max. Marks : 60

INSTRUCTION TO CANDIDATES :1. SECTION-A is COMPULSORY consisting of TEN questions carrying

TWO marks each.2. SECTION-B contains FIVE questions carrying FIVE marks each and

students has to attempt any FOUR questions.3. SECTION-C contains THREE questions carrying TEN marks each and

students has to attempt any TWO questions.

SECTION-A

l. Write briefly :

a. What do you mean by the term caulking?

b. Acme thread is combination of ........... and ............ type of thread.

c. Name any two ways of locking the nuts on bolts.

d. What is the use of Union pipe joint in a piping circuit?

e. Draw the symbols for the following welded joints along with theillustrations.

i) Single V-Butt Weld

ii) Square Weld

f. Name any two types of pipe joints.

g. What material is preferred for brasses in Plummer Block and why?

h. Name two parts rotating parts in an IC engine.

i. What is the function of steam stop valve?

j. Which type of thread is used in Screw jack applications and why?

2- 1854

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SECTION-B

2. Draw free hand proportionate neat sketches for the following :a. Rag Foundation Bolt.b. Use of lock nut for locking.

3. Draw Plan of triple riveted lap joint (zigzag type) for connecting twoplates of thickness 9 mm. Use appropriate empirical relations and showat least 2 rivet heads along each row of rivets. Use Pan head rivets in thejoint.

4. Figure 1 shows details of Gib and cotter Joint for square rods. Assemblethe parts and draw the front view of the given assembly.

70 40

160

43 55 40

R5

R15

40

1 Strapm.s1.off

55 43

40

2 Rodm.s1off

3

=

102

70

4

30

15052

22

R 10Cotterm.s1.off

Grbm.s1.off

13

FIGURE 1

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5. Figure 2 shows the upper half sectional front view of socket and spigottype pipe joint. Draw the full sectional front view of assembly.

FIGURE 2

12

0

10

0

1WHITE YARN

38

2

LEAD FILLING

16

4

13

6

10

0

120

18

0

115

Fig.1854.2

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6. Figure 3 shows the details of Oldham’s Coupling. Assemble the givenparts and draw the side view of the assembly looking in the direction ofarrow. Assume D = 30 mm.

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SECTION-C

7. Figure 4 shows the partial details of Plummer Block. Assemble the givencomponents and draw the full sectional front view of assembly.

FIGURE 4

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8. Figure 5 shows the details of Crane Hook. Assemble the given componentsand draw the front view of assembly. Hook details up to section markedas c-c may be shown in the assembly.

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9. Figure 6 shows the partial details of 50 mm steam stop valve. Assemblethe given components and draw the full sectional front view of assembly.

FIGURE 6

127

6

50 1313

13

60×2M

13 70

90

50

C21

19 19

C

193

98

19

164

156

19

82 172

13

4 HOLES, 18, ON126 PCD, OFF CENTRE LINES

4-HOLES, 16TAPPED 19DEEP,ON 132 P.C.D

10 67

5743

VALVE G.M. 1.0FF

VALVE SEATG.M. 1.0FF

5

48

333

45°

815

10

21

10

27M60 × 2 1625

250

445° 519

164

BODYCI, I.OFF

AA

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