The voltage regulation of synchronous generator operating at a lagging power factor is

The voltage regulation of synchronous generator operating at a lagging power factor is:

  1. Negative
  2. Zero
  3. Positive
  4. None of these

Correct answer: 3. Positive

The synchronous generator operating at the lagging power factor has large positive voltage regulation.

Voltage regulation is mathematically defined as:

VR = (Vnl – Vfl)/ Vfl

For lagging power factor the no-load voltage (Vnl) is quite larger then full load voltage (Vfl) and thus the voltage regulation is positive.

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