A galvanometer has

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A galvanometer has

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2) A galvanometer has

3) 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?

4) The spring material used in a spring control device should have the following property.

5) For handling greater currents induction watt-meters are used in conjunction with

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