Machine Design
When spring index increases, the value of Wahl's stress factor

Decreases linearly
Increases exponentially
Remains same
Increases linearly

ANSWER DOWNLOAD EXAMIANS APP

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
Remains constant at all speeds
Is minimum at zero speed and increases monotonically with increase in speed

ANSWER DOWNLOAD EXAMIANS APP