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Machine Design

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

All of these
Compression
Tension
Shear

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Machine Design
The root angle of a bevel gear is equal to

Pitch angle + addendum angle
Pitch angle - dedendum angle
Pitch angle - addendum angle
Pitch angle + dedendum angle

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Machine Design
A bench vice has following type of threads

Acme
Buttress
Metric
Square

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Machine Design
The efficiency of a riveted joint is equal to

Ps /P
Pc /P
Pt /P
Least of Pt, Ps and Pc/P

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Machine Design
When a beam of rectangular cross-section of width b and depth d, is subjected to a shear force F, the maximum shear stress induced will be

2F/bh
3F/2bh
4F/bh
F/bh

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Machine Design
Which of the following spring is used in mechanical wrist watch?

Helical compression spring
Torsion spring
Spiral spring
Belleville spring

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