Machine Design In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing Remains constant at all speeds 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 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 ANSWER DOWNLOAD EXAMIANS APP
Machine Design A hollow saddle key is Provided in pairs at right angles and each key is to withstand torsion in one direction only A taper key which fits in a key way of the hub and the bottom of the key is shaped to fit the curved surface of the shaft A taper key which fits in a key way of the hub and is flat on the shaft A taper key which fits half in the key way of hub and half in the key way of shaft Provided in pairs at right angles and each key is to withstand torsion in one direction only A taper key which fits in a key way of the hub and the bottom of the key is shaped to fit the curved surface of the shaft A taper key which fits in a key way of the hub and is flat on the shaft A taper key which fits half in the key way of hub and half in the key way of shaft ANSWER DOWNLOAD EXAMIANS APP
Machine Design The distribution of the forces along the length of key fitted in a shaft Varies linearly Is uniform throughout Varies exponentially, being more near the torque-input end Varies exponentially, being less near the torque-input end Varies linearly Is uniform throughout Varies exponentially, being more near the torque-input end Varies exponentially, being less near the torque-input end ANSWER DOWNLOAD EXAMIANS APP
Machine Design Crowning on pulley helps To increase pulley life To keep the belt in centre on a pulley while it is in motion In increasing the slip of the belt In decreasing the slip of the belt To increase pulley life To keep the belt in centre on a pulley while it is in motion In increasing the slip of the belt In decreasing the slip of the belt ANSWER DOWNLOAD EXAMIANS APP
Machine Design A bolt of uniform strength can be developed by None of these Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the core diameter smaller than the diameter of the unthreaded portion None of these Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the core diameter smaller than the diameter of the unthreaded portion ANSWER DOWNLOAD EXAMIANS APP
Machine Design A self locking screw has Fine threads Course threads Coefficient of friction is greater than tangent of load angle Hole for inserting split pin Fine threads Course threads Coefficient of friction is greater than tangent of load angle Hole for inserting split pin ANSWER DOWNLOAD EXAMIANS APP
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