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Machine Design

Machine Design
The wear load should be __________ the dynamic load.

Greater than
None of these
Less than
Equal to

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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

0.8 times
0.4 times
0.7 times
0.6 times

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Machine Design
In a steam engine, the piston rod is usually connected to the cross-head by means of a

Universal joint
Knuckle joint
Oldham coupling
Cotter joint

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Machine Design
Auto frettage is the method of

Pre-stressing thick cylinders
Joining thick cylinders
Calculating stresses in thick cylinders
Increasing the life of thick cylinders

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Machine Design
The shock absorbing capacity of a bolt may be increased by

Tightening the bolt properly
Increasing its shank diameter
Making the shank diameter equal to core diameter of thread
Decreasing its shank diameter

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Machine Design
The rated life of a bearing varies

Inversely as fourth power of load
Inversely as square of load
Directly as load
Inversely as cube of load

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