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Machine Design

Machine Design
If two springs are in parallel then their overall stiffness will be

None of these
Double
Half
Same

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Machine Design
The cam follower generally used in automobile engines is

Knife edge follower
Flat faced follower
Spherical faced follower
Roller follower

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Machine Design
The difference between the upper limit and lower limit of a dimension is called

Actual size
Tolerance
Nominal size
Basic size

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Machine Design
The resultant axial load on a bolt depends on

All of these
Initial tension
Relative elastic yielding (springness) of the bolt and the connected member
External load applied

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Machine Design
Fabric belts are used in industrial applications because

They are cheap
They can work at high temperature
None of these
They are unaffected by moisture and humidity

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Machine Design
A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

3
2.5
3.5
2.8

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