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Machine Design

Machine Design
According to Indian standards, total numbers of fundamental deviations are

10
15
25
20

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Machine Design
The arms of the pulleys for flat belt drive have

Major axis in plane of rotation
All the three characteristics
Elliptical cross-section
Major axis twice the minor axis

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Machine Design
Which process will increase the fatigue duration of parts?

Finishing and polishing
De-carburisation
Electroplating
Shot-peening

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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

εc + 2εl
2εc + εl
εc² + εl
εc + εl²

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Machine Design
When a load W is applied suddenly on a bar of cross-sectional area A, the stress induced in the bar will be

W/A
2W/A
3W/A
W/2A

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Machine Design
The resilience of a bolt may be increased by

Decreasing its shank diameter
Increasing its length
Decreasing its length
Increasing its shank diameter

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