單項選擇題

Why is it desirable to operate paralleled AC generators at the same power factor?（）

A.Circulating currents are kept to a minimum
B.Field excitation losses are kept to a minimum
C.Generator rotors will have a lesser tendency to hunt
D.Because a power factor increase will decrease kilowatt output

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單項選擇題

An ammeter should be used to measure （）

A.the voltage between two points in a circuit
B.circuit continuity
C.current flow in a circuit
D.total or partial circuit resistance

單項選擇題

When the voltage remains constant and the resistance is increased in a series circuit, the flow of current （）

A.increases by the square of the original value
B.increases
C.remains the same
D.decreases

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Why is it desirable to operate paralleled AC generators at the same power factor?（）

你可能感興趣的試題

An ammeter should be used to measure （）

When the voltage remains constant and the resistance is increased in a series circuit, the flow of current （）

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