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Machine Design

Machine Design
Applications in which stresses are encountered in one direction only uses following type of threads

Acme
Metric
Buttress
Square

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Machine Design
Soderberg relation is based on __________ of the material whereas all other failure relation for dynamic loading are based on ultimate strength of the material.

Yield strength
Shear strength
Elastic strength
None of these

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Machine Design
The bearings of medium series have capacity __________ over the light series.

10 to 20%
20 to 30%
30 to 40%
40 to 50%

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Machine Design
A steel containing 0.8% carbon is known as

Eutectoid steel
None of these
Hypereutectoid steel
Hypo-eutectoid steel

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Machine Design
Tensile strength of a mild steel specimen can be roughly predicted from following hardness test

None of these
Rockwell
Vickers
Brinell

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Machine Design
Which of the following is not correct procedure to increase the fatigue limit?

Shot peening
Under stressing
Surface decarburisation
Cold working

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