Which of the following makes synchronizing power to come to play in the machine?
(a) Disturbance in power mover
(b) Disturbance in field current
(c) Disturbance in load
(d) All of the mentioned
This question was posed to me in an online quiz.
This key question is from Synchronizing Power and Synchronizing Torque in chapter Synchronous Machine Stability of Electrical Machines