Theory of Machine
Idler pulley is used

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

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Angle of ascent of cam is defined as the angle

Through which the cam rotates during the period in which the follower remains in highest position
Moved by the cam from the instant the follower begins to rise, till it reaches its highest position
During which the follower returns to its initial position
Of rotation of the cam for a definite displacement of the follower

ANSWER DOWNLOAD EXAMIANS APP