A synchronous motor operating at rated voltage draws 1.0 pu current at 1.0 power factor.
The machine parameters are synchronous reactance 1.0 pu; armature resistance negligible.
Apart from supplying this rated power, if the motor has to supply an additional reactive power of 0.8 pu, then the field current has to be increased by
A. 0.42
B. 0.46
C. 0.52
D. 0.69
Show Answer
Answer: B
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