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A synchronous machine working in the motor made, is fed from an infinite bus and is delivering half full-load. If an increase in field current causes an increase in the armature current, then the motor will
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- deliver reactive power and active power to the bus
- absorb reactive power and active power from the bus
- absorb reactive power from the bus and deliver active power to the bus
- deliver reactive power to the bus and absorb active power from the bus.
Correct Option: D
The condition stated corresponds to overexcitation and it is known that an overexcited synchronous motor runs under leading p.f. condition. Therefore, motor (loaded) delivers reactive power and absorbs active power from the bus.
