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Machine Design

Machine Design
The steel pulleys are __________ in weight than cast iron pulleys of the same capacity.

Lighter
Heavier
Moderate
None of these

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Machine Design
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to (Where, Pc = tension in belt due to centrifugal force)

2 Pc
Pc/3
3 Pc
1 Pc

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Machine Design
The rated life of a bearing varies

Inversely as square of load
Inversely as cube of load
Inversely as fourth power of load
Directly as load

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Machine Design
A key way lowers

The ductility of the shaft
The strength of the shaft
The rigidity of the shaft
Both the strength and rigidity of the shaft

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Machine Design
The algebraic difference between the maximum limit and the basic size is called

Actual deviation
Mean deviation
Upper deviation
Lower deviation

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Machine Design
The cam follower generally used in automobile engines is

Roller follower
Knife edge follower
Flat faced follower
Spherical faced follower

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