Theory of Machine
To connect two parallel and coplanar shafts the following type of gearing is used

Spiral gear
Spur gear
None of the listed here
Bevel gear

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

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