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Machine Design

Machine Design
The groove angle of pulleys for V-belt is

340 to 360
420 to 450
300 to 320
More than 400

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Machine Design
When two non-parallel or intersecting but coplanar shafts are connected by gears, the arrangement is known as,

Bevel gearing
Helical gearing
Worm gearing
None of these

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Machine Design
Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?

All of these
Universal coupling
Oldham coupling
Bushed pin type coupling

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Machine Design
The resilience of a bolt may be increased by

Increasing its shank diameter
Decreasing its length
Increasing its length
Decreasing its shank diameter

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt is the tensile stress for the shell material, then thickness of shell is equal to

pd/3σt
pd/2σt
pd/4σt
pd/σt

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Machine Design
The helix angle for double helical gears may be made up to

90°
60°
75°
45°

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