In a D.C. generator in case the resistance of the field winding is increased, then output voltage will____________?
Correct answer: B. decrease
- A. increase
- B. decrease
- C. remain unaffected
- D. fluctuate heavily
Explanation
Increasing the shunt-field resistance reduces field current and weakens the magnetic flux. Since generated emf is proportional to flux at a given speed, the generator output voltage decreases.
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