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Machine Design

Machine Design
When a close coiled helical spring is compressed, its wire is subjected to

All of these
Shear
Tension
Compression

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

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

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Machine Design
The fatigue life of a part can be improved by

Shot peening
Polishing
Coating
Electroplating

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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
0.4 times
0.8 times
0.6 times

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Machine Design
The property of a bearing material which has the ability to accommodate shaft deflections and bearing inaccuracies by plastic deformation without excessive wear and heating, is known as

Fatigue strength
Bondability
Embeddability
Comformability

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Machine Design
In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.

Both A and B
Right hand
None of these
Left hand

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