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# Solved Problems-4

Problems-4
In the network shown, calculate the power input to each of the following elements when it is connected across A and B.
1. a resistance RAB of 59 Î©.
2. a voltage source of â€“160 V.

Solution
1. Converting the two deltas into star,
,

and

âˆ´

Main current,

Current in 59Î© resistor,

Power input,
By KVL,

and

Solving,

âˆ´ Power input,