DC GENERATOR - Practice Mode

1) How interpoles are connected in a DC generator?

In series with armature In parallel with armature In series with shunt field In parallel with shunt field

Correct Answer: In series with armature

2) What is the necessity of residual magnetism in a self excited DC generator?

Build up the voltage Reduce the field current Reduce armature current Maintain constant output voltage

Correct Answer: Build up the voltage

3) Which are the two points that the brush contact resistance measured in D.C machines?

Resistance between the opposite brushes Resistance between brush and commutator raiser Resistance between brush and commutator Resistance between brush and armature conductors

Correct Answer: Resistance between brush and commutator

4) What is the name of the compound generator, if the shunt field is connected in parallel with armature?

Long shunt compound Cumulative compound Differential compound Short shunt compound

Correct Answer: Short shunt compound

5) Why the armature core of a DC generator is laminated?

Reduce the copper loss Reduce the friction loss Reduce the hysteresis loss Reduce the eddy current loss

Correct Answer: Reduce the eddy current loss

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