Machine Design
In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by

Remain unaffected with cross-section area
Would depend upon other factors
Decreasing the cross-section area of bar
Increasing the cross-section area of bar

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Crowning on pulley helps

To increase pulley life
In decreasing the slip of the belt
To keep the belt in centre on a pulley while it is in motion
In increasing the slip of the belt

ANSWER DOWNLOAD EXAMIANS APP