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85. Axial thrust is minimum in case of

86.

87.

88.

89.

90.

91.

92.

A)
०)

Spur gears
Bevel gears

B) Double helical gears
D) Mitre gears

For resistance spot welding of 1.5 mm thick steel sheet current required is on the

ord
A)
0)

ler of
10A
100A

8) 10000 A
ഉ) 1000 A

The coupling used to connect two shafts with large angular misalignment is

A)
०)

Int
A)
0)

For

A helical spring has ‏م“‎

Flange coupling
An Oldham’s coupling

he assembly design of shaft, pulley and
Pulley
Shaft

manufacturing pipes which carry gas, w
isted below ?
Rivetting

1 and 2

2) Welding

8) Hook's joint
D) Flexible bush coupling

key the weakest member is
B) Key
D) None

hat are the joining processes employed
3) Bolts and Nuts

8) 2 alone
D) 1,2and3

’ number of turns, Coil Diameter ‘D’ a second spring made

⋅⋅ ⋅ ന്‌ ⋅
of same wire diameter and of same material has — turns of diameter of 2D. If the

stiffness of first spring is ‘K’ then stiffness of second spring is

A)
०)

2
2K

B)
D)

07
4K

Minimum number of teeth on a pinion of 20° full depth system without interference is

A)

17 B) 31

©) 14 D) 12

For transmitting power in both direction screw thread adopted is

A)
०)

Multiple thread
Buttress thread

B) Square thread
D) Acme thread

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