A、brushes on a commutator
B、brushes on slip rings
C、slip rings on a commutator
D、direct connections from the stator
更多“Voltage generated by most AC generators is fed from the machine to the bus by means of（）.”相关的问题
A、residual magnetism B、voltage regulator C、electrical current for excitation D、the other running generator
A、A.speed of the prime mover B、B.AC excitation to the field C、C.DC excitation to the field D、D.DC excitation of the voltage regulator
A、brushes on a commutator B、brushes on slip rings C、slip rings on a commutator D、direct connections from the stator
A、A.connected load B、B.prime mover speed C、C.field excitation D、D.generators rated voltage
A、varying the DC exciter voltage B、varying the reluctance of the air gap C、regulating the speed of the prime mover D、shorting out part of the armature windings
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