单项选择题
The frequency of an AC generator is adjusted by means of the （）
A.main alternator field rheostat B.exciter field rheostat C.prime mover governor control D.equalizing reactor
单项选择题 When the current flow through a copper wire increases, its （）
单项选择题 When securing an AC generator, you should FIRST （）.
单项选择题 Prior to starting an AC generator prime mover, the voltage regulator cutout switch should be placed in the （）
