A.Routine supervisory labor particularly the unproductive night-service labor is reduced
B.Engine mal-operation is automatically sensed and manned
C.The engine room need be manned at night in bad weather or close waters
D.Some remedial measures can be taken automatically
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A.internal heat it can withstand
B.load it can carry continuously
C.load it is capable of supplying
D.overload it can carry for a specified time only
A.full excitation
B.load
C.power factor
D.number of poles
A.blow out coils
B.governor relay
C.under voltage trips
D.reverse current trips
A.dynamometer
B.power factor meter
C.three-phase motor
D.polyphase voltmeter
A.loss of field excitation
B.total loss of load
C.large increase in load
D.loss of steam pressure
最新試題
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