問題詳情
16.Which device is used to control the speed of the prime mover of a-c generator in order to ensurethe frequency of a electrical system is not influenced by various load?
(A)Governor
(B)Solid-state power converter
(C)Uninterruptible power supply
(D)Variable injection timing system
參考答案
答案：A
難度：適中0.628571
統計：A(22),B(8),C(3),D(1),E(0)