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DC Motors

DC Motors
Small dc motors up to 5 HP usually have

4 poles
2 poles
8 poles
6 poles

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DC Motors
The torque developed by a dc motor is directly proportional to

None of the listed here
Armature resistance × armature current
Flux per pole × armature current
Armature resistance × applied voltage

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DC Motors
The power mentioned on the name plate of an electric motor indicates

The gross power
The power drawn in kVA
The power drawn in kW
The output power available at the shaft

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DC Motors
The most suitable motor for elevators is the ____ motor.

Cummulative compounded
Shunt
Differentially compuonded
Series

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DC Motors
The commutating pole winding is connected in

Series with the armature
Parallel with the armature
Series-parallel with the armature
None of the listed here

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DC Motors
If a D.C. motor is to be selected for conveyors, which rriotor would be preferred ?

Cumulative compound motor
Shunt motor
Differentially compound motor
Series motor

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