Machine Design
The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.

Three times
Double
Same
Four times

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Machine Design
Spring stiffness is

Its ability to absorb shocks
Load required to produce unit deflection
Ratio of coil diameter to wire diameter
Its capability of storing energy

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Machine Design
In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing

Is maximum at zero speed and decreases monotonically with increase in speed
Becomes minimum at an optimum speed and then increases with further increase in speed
Is minimum at zero speed and increases monotonically with increase in speed
Remains constant at all speeds

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Machine Design
The face of the tooth is the

Surface of the tooth below the pitch surface
Surface of the tooth above the pitch surface
Width of the tooth measured along the pitch circle
Surface of the top of the tooth

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