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An alternator, with synchronous reactance of 0.8 pv is connected to an IBB at rated voltage. With its excitation emf adjusted to 1.3 pv, the alternator delivers an output of 0.5 pv. The load angle is __________

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An alternator, with synchronous reactance of 0.8 pv is connected to an IBB at rated voltage. With its excitation emf adjusted to 1.3 pv, the alternator delivers an output of 0.5 pv. The load angle is __________

(a) 17.92

(b) 72.08

(c) 34.92

(d) 90

I had been asked this question in a national level competition.

The question is from Power Flow Through an Inductive Impedance topic in chapter Efficiency and Regulation of Electrical Machines

1 Answer

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Best answer
Correct answer is (a) 17.92

Easiest explanation: δ = atan(0.5*0.8/1.3) = 17.92°.

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