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Machine Design

Machine Design
Which of the following has threads at both ends?

Stud
Tap bolt
Bolt
None of these

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Machine Design
When spring index increases, the value of Wahl's stress factor

Increases exponentially
Remains same
Decreases linearly
Increases linearly

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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
The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

Less
Same
None of these
More

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Machine Design
The belt slip occurs due to

Loose belt
Any one of the above
Heavy load
Driving pulley too small

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Machine Design
Lewis equation in gears is used to find the

Fatigue stress
Shear stress
Compressive stress in bending
Tensile stress in bending

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