A.Dram
B.Salient pole
C.Squirrel-cage
D.Wound-rotor
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A.load limit settings
B.idle speed settings
C.speed limit settings
D.speed droop settings
A.collect all available data on a casualty
B.recognize normal operation
C.identify the probable cause of a symptom
D.isolate the faulty component
A.magnetic amplifier
B.ship’s service alternator
C.three-wire DC generator
D.saturable core reactor
A.draw a one line diagram of the circuitry
B.test all fuses and measure the line voltage
C.take megger readings
D.insulate the apparatus from ground
A.melts and must be replaced
B.is enclosed in a tube of insulating material with metal ferrules at each end
C.gives no visual indication of having opened the circuit
D.trips to break the circuit and may be reset
最新試題
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
Diesel engine air start system check valves are opened by （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The treatment of the fuel oils involves storage, heating, filtering and（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
The shipboard oil pollution emergency plan will be invalid after （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）