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DC Motors

DC Motors
A dc series motor is most suitable for

Lathes
Cranes
Punch presses
Pump

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DC Motors
If the speed of a dc shunt motor is increased the back emf of the motor will

Remains same
Become zero
Decrease
Increase

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DC Motors
In D.C. shunt motors as load is reduced

The speed will increase abruptly
The speed will remain almost/constant
The speed will increase in proportion to reduction in load
The speed will reduce

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DC Motors
By putting controller resistance in series with the armature of a dc motor, we can obtain speeds

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

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DC Motors
The armature torque of the D.C. shunt motor is proportional to

armature current only
field flux only
both (A) and (B)
None of these

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DC Motors
The armature voltage control of dc motor provides

Constant torque drive
None of the listed here
Constant current drive
Constant voltage drive

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MORE MCQ ON DC Motors

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