A governor is said to be stable when

A.There is one radius of the governor weights for each equilibrium speed
B.There is minimum change of the radius of the governor weights at a operating speed
C.The position of balls does not change within the operating speed
D.The position of balls changes within permissible limits within the working range of a governor
E.None of the above

In case of involute the angular velocity ratio is

A.Directly proportional to radius of base circle from which the involute was generated
B.Inversely proportional to radius of base circle from which the involute was generated
C.Directly proportional to the distance of the chord over which thread is unwound
D.Inversely proportional to the distance of the chord over which thread is wound
E.None of the above