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單項(xiàng)選擇題

A fuse that blows often should be replaced only with a fuse of （）.

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

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單項(xiàng)選擇題

A constant output voltage from an AC generator is maintained by the （）.

A.prime mover governor
B.exciter generator
C.voltage regulator
D.reverse power relay

單項(xiàng)選擇題

What type of rotor is used in split-phase motors?（）

A.Dram
B.Salient pole
C.Squirrel-cage
D.Wound-rotor

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A fuse that blows often should be replaced only with a fuse of （）.

你可能感興趣的試題

A constant output voltage from an AC generator is maintained by the （）.

What type of rotor is used in split-phase motors?（）

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