A.short proof
B.ground proof
C.explosion proof
D.overload proof
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A.AC
B.DC
C.generator
D.fresh water generator
A.AC voltage to the armature
B.AC voltage to the field
C.DC voltage to the armature
D.DC voltage to the field
A.wash it with fresh water and apply an external source of heat
B.renew the windings
C.send it ashore to an approved service facility
D.rinse all electrical parts with a carbon tetrachloride cleaning solvent and then blow dry the motor with compressed air
A.the recommended current and voltage rating
B.higher current and voltage rating
C.higher current and lower voltage rating
D.lower current and higher voltage rating
A.prime mover governor
B.exciter generator
C.voltage regulator
D.reverse power relay
最新試題
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
The main purpose of port State control is not to（）
Diesel engine air start system check valves are opened by （）
Which of the following items don’t belong to dock repair works?（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Cold weather starting of a diesel engine may be made easier by（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
（） is not installed on the main switchboar.