If a small electric motor is immersed in salt water it should be （）
(1) washed in fresh water
(2) dried in an oven
A.(1) only
B.(2) only
C.both (1) and (2)
D.neither (1) or (2)
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A.ampere
B.kilovolt
C.watt
D.farad
A.wasted energy
B.efficient operation
C.a short in the exciter field windings
D.an excessive number of minor system grounds
A.increase
B.not change
C.decrease
D.be exactly 60 hertz
A.alternating current
B.omnidirectional current
C.direct current
D.sinusoidal current
A.result in immediate power outages
B.damage circuit breakers
C.appear on the ground detection system
D.damage insulation and may cause outages
最新試題
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