單項(xiàng)選擇題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
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1.單項(xiàng)選擇題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
2.單項(xiàng)選擇題In a three-phase circuit, the phase voltages are （）
A.120°apart
B.160°apart
C.180°apart
D.360°apart
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