A synchronous motor working at leading power factor can be used as
A synchronous motor working at leading power factor can be used as
Right Answer is:
None of the above
SOLUTION
- When the synchronous motor operates at a leading power factor then Rotor is overexcited in such a way that the back emf (Eb which is generated in stator due to dc excitation of the rotor) is greater than the supply voltage (V).
- In this case, a Synchronous motor will be operating at a leading power factor.
- At this time resultant flux is greater than that is required for the unity power factor, then this extra flux will generate reactive power so the motor will generate reactive power. And it will use active power too for mechanical work.
- Therefore synchronous motor working on leading PF will work as a synchronous condenser.
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