A.in series with the power source and load
B.in parallel with the power source and load
C.insuring correct polarity
D.using the lowest range possible to prevent instrument damage
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A.main alternator field rheostat
B.exciter field rheostat
C.prime mover governor control
D.equalizing reactor
A.resistance will decrease
B.insulation will bum
C.temperature will increase
D.conductivity will increase
A.open the generator circuit breaker
B.switch the voltage regulator to “manual”
C.decrease the field excitation to minimum
D.reduce the load on the unit
A.manual position
B.bus neutral position
C.raise voltage position
D.transfer position
A.prevent the windings from becoming brittle
B.prevent moisture from condensing in the windings during shutdown
C.prevent acidic pitting of the slip rings
D.keep the lube oil warm for quick starting
最新試題
Diesel engine air start system check valves are opened by （）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
To proceed to the assistance of a ship in distress is（）
Engine parameters shall be corresponded to NOx Technical Files. This is required 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（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.