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DC Motors

DC Motors
The maximum end play of a motor is about

10 mm
2 mm
0.4 mm
6 mm

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DC Motors
A compensating winding is an auxiliary winding embedded in slots in

None of the listed here
Partly in pole faces, partly in armature
The armature
The pole faces of main poles

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DC Motors
The commutating winding is basically used in a dc machine

To control the speed of machine
None of the listed here
To improve commutation
To reduce armature reaction

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DC Motors
In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be

Almost negligible
Rated full-load current
Less than full-load current
More than full-load current

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DC Motors
Small dc motors up to 5 HP usually have

8 poles
6 poles
4 poles
2 poles

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DC Motors
One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven

Also runs as a motor comes to stop after sometime
Does not run as a generator
None of these
Runs as a generator

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MORE MCQ ON DC Motors

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