A.higher than the bus frequency
B.lower than the bus freouencv
C.the same as the bus frequency but out of phase with it
D.the same as the bus frequency, and the circuit breaker may be closed at any pointer position
您可能感興趣的試卷
你可能感興趣的試題
A.visual inspection for dirt accumulation
B.high megger readings
C.low operating temperature
D.the time period since the last cleaning
A.capacitive circuit
B.inductive circuit
C.magnetic circuit
D.resistive circuit
A.phase angle
B.frequency
C.wave form
D.half mode
A.vibration
B.watertight integrity
C.speed droop
D.reactive power
A.frequency meter
B.voltage regulator
C.governor control
D.sychroscope switch
最新試題
The ISPS Code consists of a mandatory section-Part A, which shows()
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()
When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?()
The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
()are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()
To proceed to the assistance of a ship in distress is()