Q. 42 A 3-phase, 400 V, 5 kW, star connected synchronous motor having an internal reactance of
is operating at 50% load, unity p.f. Now, the excitation is increased by 1%. What will be the new load in percent, if the power factor is to be kept same ? Neglect all losses and consider linear magnetic circuit.
(A) 67.9%
(B) 56.9%
(C) 51%
(D) 50%
Answer:(A)
Explanation:
