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Machine Design

Machine Design
The stretching in a belt can be controlled by __________ the stress in the belt.

Increasing
Both A and B
None of these
Reducing

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Machine Design
In cylindrical cams, the follower moves

In any direction irrespective of cam axis
In a direction perpendicular to the cam axis
In a direction parallel to the cam axis
Along the cam axis

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Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

30-50 m/s
1-3 m/s
15-30 m/s
3-15 m/s

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Machine Design
The piston pin bearings in heavy duty diesel engines are

Spherical roller bearings
Needle roller bearings
Tapered roller bearings
Cylindrical roller bearings

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Machine Design
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of

0.55
0.75
0.65
0.45

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Machine Design
In the assembly of pulley, key and shaft

All the three are designed for equal strength
Pulley is made the weakest
Key is made the weakest
Key is made the strongest

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