Answer to Question #181848 in Electrical Engineering for joshua

Question #181848

A 228/-30 volt constant potential generator delivers load to an impedance. Assuming the reactance only to be variable and the line impedance is (6 + j4.5) ohms, calculate for maximum power transfer: a) the load impedance, b) the current, and c) the load power and power factor. NEEDS SOLUTION


1
Expert's answer
2021-04-22T07:22:56-0400

a) For maximum power transfer the load impedance =6j4.5=6-j4.5


b) The current =228/12=19A=228/12= 19A


c) The load power=I2R=192×6=2166W=I^2R=19^2\times6=2166W


The load power factor is Cos(tan1(4.5/6))=cos36.86°=0.8leadCos(tan^{-1}(4.5/6) )=cos36.86\degree=0.8lead

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