Electrical Technology - 2019-5-17

2019-05-17View Original

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This post was last edited by sdscj0122 on 2019-5-18 08:56. The power factor of alternating current is equal to _____. A. The ratio of instantaneous power to apparent power. B. The ratio of reactive power to active power in a circuit. C. The cosine of the phase difference between voltage and current in a circuit. D. The sine of the phase difference between voltage and current in a circuit. C

Reply #22019-05-17

C. Cosine of the phase difference between voltage and current in the circuit

Reply #32019-05-17

C. Cosine of the phase difference between voltage and current in the circuit

Reply #42019-05-17

It should be: the ratio of real power to apparent power

Reply #52019-05-17

C. Cosine of the phase difference between voltage and current in the circuit

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Electrical Technology - 2019-5-17

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