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Machine Design

Machine Design
A spring is used to

Apply forces
Store energy
All of these
Measure forces

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

Same
Less
More
None of these

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Machine Design
The rocker arms in internal combustion engines are of__________.

First type levers
None of these
Second type levers
Third type levers

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Machine Design
According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be

45 to 60%
63 to 70%
80 to 90%
70 to 83%

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

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

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Machine Design
In V-belt drive, belt touches

At bottom
Both at bottom and sides
Could touch anywhere
At sides only

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