A.varying the D-Cexciter voltage
B.varying the reluctance of the air gap
C.regulating the speed of prime mover
D.shorting out part of the armature windings
您可能感興趣的試卷
你可能感興趣的試題
A.short circuit
B.speed up
C.slow down
D.hunting
A.live
B.dead
C.excited
D.on line
A.Feed back
B.Negative feed back
C.Close loop
D.Open loop
A.The shaft
B.The mechanical
C.The electric
D.The indicated
A.compressed air
B.hydraulic oil
C.electricity
D.All of the above
最新試題
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
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?（）
To proceed to the assistance of a ship in distress is（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Diesel engine air start system check valves are opened by （）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
The main purpose of port State control is not to（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.