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Machine Design

Machine Design
The static tooth load should be __________ the dynamic load.

Equal to
None of these
Greater than
Less than

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Machine Design
For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately

0.7 times
0.8 times
0.4 times
0.6 times

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Machine Design
For steel, the ultimate strength in shear as compared to ultimate strength in tension is

43832
43833
43834
43864

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Machine Design
The cam follower extensively used in aircraft engines is

Roller follower
Spherical faced follower
Knife edge follower
Flat faced follower

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Machine Design
When two helical springs of equal lengths are arranged to form a cluster spring, then

Both A and B is correct
Shear stress in each spring will be equal
Only A is correct
Load taken by each spring will be half the total load

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Machine Design
Which of the following spring is used in mechanical wrist watch?

Torsion spring
Helical compression spring
Spiral spring
Belleville spring

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