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In the following circuit. Find the power output of the source.(a) 27(b) 28(c) 29(d) 30I had been asked this question in exam.Query is from Nodal Analysis topic in section Steady State AC Analysis of Network Theory

Answer»

Correct answer is (a) 27

The EXPLANATION: Total power delivered by the SOURCE is the PRODUCT of VOLTAGE and current and is given by power output of the source VIcosφ = 20 x 1.71cos142⁰ = 26.95W.



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