In an oil lubricated journal bearing, the coefficient of friction between the jo

Question - In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing

Options:

A . Remains constant at all speeds

B . Is minimum at zero speed and increases monotonically with increase in speed

C . Is maximum at zero speed and decreases monotonically with increase in speed

D . Becomes minimum at an optimum speed and then increases with further increase in speed

Answer: Option D

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