A.short proof
B.ground proof
C.explosion proof
D.overload proof
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A.prime mover speed
B.exciter output voltage
C.load on the alternator
D.number of poles
A.shunt field
B.circuit breaker
C.metal framework
D.inter-pole
A.brushes
B.slip rings
C.commutators
D.all of the above
A.is usual
B.is not usual
C.is necessary
D.is not impossible
A.protective earth
B.isolators
C.ground switch
D.circuit-breakers
最新試題
Under MARPOL Code the ship to which it applies has to carry （）
（） is not installed on the main switchboar.
The ISPS Code consists of a mandatory section-Part A, which shows（）
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.
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
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?（）
The condensers located in various stages of a flash evaporator are cooled by（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Which of the following items don’t belong to dock repair works?（）