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Machine Design

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

More than
None of these
Less than
Equal to

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Machine Design
The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for

Ease of manufacture
Reducing stress concentration
Safety
Fullering and caulking

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Machine Design
The stretching in a belt can be controlled by __________ the stress in the belt.

Reducing
Increasing
Both A and B
None of these

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Machine Design
The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be

3 times more
2 times more
4 times more
Same in both cases

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Machine Design
The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are εc and εl respectively. The change in volume of the boiler cylinder per unit volume will be

εc² + εl
2εc + εl
εc + 2εl
εc + εl²

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Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.4
0.55
0.5
0.33

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