A.develop torque
B.generate high voltages
C.produce a magnetic field
D.generate high electrical resistance
您可能感興趣的試卷
你可能感興趣的試題
A.connected load
B.prime mover speed
C.field excitation
D.generators rated voltage
A.doubled
B.quadrupled
C.unchanged
D.cut in half
A.voltage regulator
B.reverse power relay
C.reverse current relay
D.governor control switch
A.field excitation of both units is adjusted
B.governors of both units are adjusted
C.phase sequence is altered
D.kilowatt load is evenly divided
A.are less expensive
B.require less maintenance
C.can be started across the line
D.offer a more effective means of controlling speed
最新試題
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The condensers located in various stages of a flash evaporator are cooled by（）
The main purpose of port State control is not to（）
Under MARPOL Code the ship to which it applies has to carry （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
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