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With constant E,V,Z, the maximum input power can be obtained at load angle of value _______

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With constant E,V,Z, the maximum input power can be obtained at load angle of value _______

(a) 180-θ

(b) 90+θ

(c) θ

(d) 180

The question was posed to me in examination.

My enquiry is from Power Flow Through an Inductive Impedance in portion Efficiency and Regulation of Electrical Machines

1 Answer

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Best answer
Right option is (a) 180-θ

For explanation: dPi/dδ = EVcos(δ-α) = 0

              δ = 90+α = 2α+θ=180-θ.

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