One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revol

Question

One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land?

Options:

A . 1

B . 0.84

C . 0.73

D . 0.65

Answer: Option B

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