Question 186Electricity & Electronics - QMED

You are correct, the statement C) The cycles per second of each alternator are the same is the true statement concerning the operation of two alternators in parallel. For alternators to operate in parallel, their electrical frequencies (cycles per second) must be synchronized. This ensures that the alternators are producing power in phase with each other, allowing the load to be shared. The frequency is directly related to the rotational speed of the alternator, so the alternators must be running at the same speed. The other statements are not necessarily true - the governors do not need to have the same droop settings, the number of field poles can differ, and the load does not have to be divided equally between the alternators, as long as their frequencies are matched.