DC GENERATOR - Practice Mode

1) What is the purpose of field coils in D.C generator?

To increase the flux in air gap To decrease the magnetizing current To magnetize the poles to produce coil flux To increase the reluctance of magnetic path

Correct Answer: To magnetize the poles to produce coil flux

2) Which metal is used to make pole core of large DC generator machines?

Soft iron Cast iron Cast steel Stainless steel

Correct Answer: Cast steel

3) Why the pole core stampings are laminated in DC generator?

Reduce the friction loss Reduce the windage loss Reduce the hysteresis loss Reduce the eddy current loss

Correct Answer: Reduce the eddy current loss

4) Which type of DC generator is used for electroplating process?

Shunt generator Series generator Differential compound generator Cumulative compound generator

Correct Answer: Shunt generator

5) What is the purpose of compensating winding in DC generator?

Minimizes rough commutation Maintain constant output voltage Neutralizes the demagnetizing effect Decreases the excitation current of field coils

Correct Answer: Neutralizes the demagnetizing effect

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