The balanced three-phase load shown in Fig. is fed from a balanced, positive-sequence, thr...

The balanced three-phase load shown in Fig. is fed from a balanced, positive-sequence, three-phase Y-connected source. The impedance of the line connecting the source to the load is negligible. The line-to-neutral voltage of the source is 7200 V.

a) Find the reading of the wattmeter in watts.

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b) Explain how you would connect a second wattmeter in the circuit so that the two wattmeters would measure the total power.

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c) calculate the reading of the second wattmeter

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d) verify that the sum of the two wattmeter readings equals the total average power delivered to the load

Figure