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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
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

τ
τ/2
2 τ
4 τ

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Machine Design
In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.

180°
135°
90°
160°

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Machine Design
A chain drive transmits __________ power as compared to belt drive.

Same
More
Less
None of these

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Machine Design
In designing thick cylinders, the equation used is

Clavarinos' equation
All of these
Lame's equation
Birnie's equation

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Machine Design
Screws used for power transmission should have

Low efficiency
Strong teeth
Very fine threads
High efficiency

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