Power flowing in 3-phase, 3-wire system is measured by two wattmeter whose readings are 7000 W and -2500 W. if the voltage of the circuit is 400 V, then what will be the value of capacitance introduced in each phase to make one wattmeter reads zero? The frequency is 50 Hz.

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Measurement of Power and Related Parameters topics include: Dynamometer type wattmeter, dynamometer wattmeter errors, induction type single phase energy meter, lag adjustment devices, friction and overload compensation, phase sequence indicator, single phase energy meters errors and adjustments, advanced problems on power measurement. Power is measured in watts (W). Here are some devices that can measure power: Wattmeter: An electrical instrument that measures the electric power of a circuit. It works by calculating the product of instantaneous voltage and current, and then integrating it... Show more

Power flowing in 3-phase, 3-wire system is measured by two wattmeter whose readings are 7000 W and -2500 W. if the voltage of the circuit is 400 V, then what will be the value of capacitance introduced in each phase to make one wattmeter reads zero? The frequency is 50 Hz.