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Machine Design

Machine Design
For tight leakage joints, following type of thread is best suited

Square
Metric
Buttress
NPT (national pipe threads).

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Machine Design
The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.

None of these
More than
Less than
Equal to

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

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

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Machine Design
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of

0.45
0.55
0.65
0.75

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Machine Design
In V-belt drive, belt touches

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

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Machine Design
Guest's theory is used for

Ductile materials
Plastic materials
Brittle materials
Elastic materials

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