单项选择题
A.connected load B.prime mover speed C.field excitation D.generators rated voltage
If the resistance of a circuit is cut in half and the a...
单项选择题If the resistance of a circuit is cut in half and the applied voltage is kept constant, the current flow will be （）.
A.doubled B.quadrupled C.unchanged D.cut in half
Equal power factors on paralleled AC generators are mai...
单项选择题Equal power factors on paralleled AC generators are maintained by an automatic （）.
A.voltage regulator B.reverse power relay C.reverse current relay D.governor control switch
To equalize the power factor of two alternators operati...
单项选择题To equalize the power factor of two alternators operating in parallel, the （）
A.field excitation of both units is adjusted B.governors of both units are adjusted C.phase sequence is altered D.kilowatt load is evenly divided
