单项选择题
A.the resistor next to the negative terminal B.a short circuit C.the resistor next to the positive terminal D.an open circuit
The division of kilowatt load between two paralleled al...
单项选择题The division of kilowatt load between two paralleled alternators is determined by the （）
A.amount of field excitation of the leading machine B.load-speed characteristics of the governors C.amount of field excitation to the lagging machine D.type of alternator
The division of the kilowatt load between two AC genera...
单项选择题The division of the kilowatt load between two AC generators operating in parallel is controlled by the settings and characteristics of the （）.
A.voltage regulators B.field rheostats C.reverse power relays D.prime mover governors
In a three-phase circuit, the phase voltages are （）A.12...
单项选择题In a three-phase circuit, the phase voltages are （）
A.120°apart B.160°apart C.180°apart D.360°apart
