Angle moved by the cam during which follower remains at its highest position is called

Explanation:

The following term is used with reference to the angular motion of the cam. 

Angle of Ascent:

• It is the angle through which the cam turns during the time follower rises.
• B - D represents ascent.

Angle of Dwell: 

• It is the angle through which the cam turns while the follower remains stationary at the highest or the lowest position.
• D - E represents dwell.

Angle of Descent:

• It is the angle through which the cam turns during the time the follower returns to the initial position.
• E - G represents dwell.