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DC Motors

DC Motors
A dc series motor is most suitable for

Pump
Lathes
Punch presses
Cranes

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DC Motors
The value of back emf in dc motor is maximum at

Full load
None of the listed here
Half full load
No load

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DC Motors
By flux control method of speed control of a dc shunt motor, we can obtain speeds.

Above as well as below the normal speed
Above the normal speed only
Below the normal speed only
None of the listed here

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DC Motors
Excessive motor vibration is caused by

Too much brush tension
Open armature coil
Bent shaft
Worn bearings

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DC Motors
What will happen if the back emf of a dc motor vanishes suddenly?

The motor will run noisy
The motor will continue to run
The armature may burn
The motor will stop

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

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

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MORE MCQ ON DC Motors

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