单项选择题
Why is it desirable to operate paralleled AC generators at the same power factor?（）
A.Circulating currents are kept to a minimum B.Field excitation losses are kept to a minimum C.Generator rotors will have a lesser tendency to hunt D.Because a power factor increase will decrease kilowatt output
单项选择题 An ammeter should be used to measure （）
单项选择题 When the voltage remains constant and the resistance is increased in a series circuit, the flow of current （）
单项选择题 The power factor of an AC generator operating singularly is determined by the （）
