By | June 10, 2020
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Created by Surendra

DC Generators Quiz in English Set 1

All Important Question Answers for Electrician Related Exams

1 / 25

For a D.C. generator when the number of poles and the number of armature conductors is fixed then which winding will give the higher e.m.f. ?

2 / 25

Iron losses in a D.C. machine are independent of variations in

3 / 25

Which of the following could be lamina-proximately the thickness of lamination’s of a D.C. machine ?

4 / 25

In case of D.C. machines mechanical losses are primary function of

5 / 25

While applying Fleming’s right-hand rule to And the direction of induced e.m.f. the thumb points towards

6 / 25

In D.C. generators the polarity of the interpoles

7 / 25

The bearings used to support the rotor shafts are generally

8 / 25

The e.m.f. generated in a D.C. generator is directly proportional to

9 / 25

In a commutator

10 / 25

The armature of D.C. generator is laminated to

11 / 25

In a four-pole D.C. machine

12 / 25

Lamination’s of core are generally made of

13 / 25

Permeance is the reciprocal of

14 / 25

The resistance of armature winding depends on

15 / 25

Fleming’s right-hand rule regarding direction of induced e.m.f. correlates

16 / 25

The commutator segments are connected to the armature conductors by means of

17 / 25

In a D.C. generator the number of mechanical degrees and electrical degrees will be the same when

18 / 25

A separately excited generator as compared to a self-excited generator

19 / 25

In D.C. generators the pole shoes are fastened to the pole core by

20 / 25

In D.C. generators the cause of rapid brush wear may be

21 / 25

Copper brushes in D.C. machine are used

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In a D.C. generator the magnetic neutral axis coincides with the geometrical neutral axis when

23 / 25

According to Fleming’s right-hand rule for finding the direction of induced e.m.f. when middle finger points in the direction of induced e.m.f. forefinger will point in the direction of

24 / 25

The field coils of D.C. generator are usually made of

25 / 25

In lap winding the number of brushes is always

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