单项选择题

The power factor at which a paralleled AC generator operates is usually adjusted by the （）.

A.connected load
B.prime mover speed
C.field excitation
D.generators rated voltage

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单项选择题

A.doubled
B.quadrupled
C.unchanged
D.cut in half

单项选择题

A.voltage regulator
B.reverse power relay
C.reverse current relay
D.governor control switch

单项选择题

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