Theory of Machine
Idler pulley is used

For increasing velocity ratio
For applying tension
All of the listed here
For changing the direction of motion of the belt

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Sensitiveness of the governor is defined as the ratio of the

Sum of the maximum and minimum equilibrium speeds to the mean speed
Difference of the maximum and minimum equilibrium speeds to the mean speed
Mean speed to the maximum equilibrium speed
Mean speed to the minimum equilibrium speed

ANSWER DOWNLOAD EXAMIANS APP