The balanced three-phase load shown in Fig. P11.49 is fed from a balanced
Chapter 11, Problem 11.49(choose chapter or problem)
The balanced three-phase load shown in Fig. P11.49 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.
b) Explain how you would connect a second wattmeter in the circuit so that the two wattmeters would measure the total power.
c) Calculate the reading of the second wattmeter.
d) Verify that the sum of the two wattmeter readings equals the total average power delivered to the load.
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