GATE EE 2018 Set 1 — Question 18
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Electric Circuits → AC Power & Three-Phase → Complex Power
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Question
In the figure, the voltages are , and . The circuit is in sinusoidal steady state, and . , and are the average power outputs. Which one of the following statements is true?
Correct answer
(C) P₁ < 0, P₂ 0, P₃ < 0
Solution
The average power output from a voltage source to another source through a purely inductive impedance (since ) is given by:Converting the given voltages to phasor form:
- (since )
- (since )
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