For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging Options: A . &nbspOne of the wattmeters will read zero B . &nbspBoth give the same readings C . &nbspOne of the wattmeter connections will have to be reversed D . &nbspPressure coil of the wattmeter will become ineffective.

For power measurement of three phase circuit by two wattmeter method, when the v

Question

For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging

Options:

A . One of the wattmeters will read zero

B . Both give the same readings

C . One of the wattmeter connections will have to be reversed

D . Pressure coil of the wattmeter will become ineffective.

Answer: Option C

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