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Machine Design

Machine Design
In a flange coupling, the bolts are subjected to

None of these
Compressive stress
Tensile stress
Shear stress

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Machine Design
For high speed engines, the cam follower should move with

Uniform velocity
Cycloidal motion
Simple harmonic motion
Uniform acceleration and retardation

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Machine Design
The size of a cam depends upon

Prime circle
Base circle
Pitch circle
Pitch curve

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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)

3 Pc
1 Pc
Pc/3
2 Pc

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Machine Design
The centrifugal tension in belts

Increases the power transmitted
Increase the wrap angle
Increases the belt tension without increasing power transmission
Decreases the power transmitted

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Machine Design
The objective of 'crowning' of the flat pulleys of belt drive is to

Prevent the belt from running off the pulley
Increase the belt velocity
Prevent the belt joint from damaging the belt surface
Increase the power transmission capacity

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