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QUESTIONS

DC Motors
In a dc motor constant torque is produced due to

Commutator
End plates
Rotor laminations
Pole shoes

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DC Motors
A dc series motor is best suited for driving

Machine tools
None of the listed here
Cranes and hoists
Shear and punches

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DC Motors
During rheostat braking of dc series motor

Motor is run at reduced speed
Motor is run as a generator
None of the listed here
Motor is reversed in direction

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DC Motors
Dc shunt motors are used for driving

Hoist
Cranes
Machine tools
Trains

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DC Motors
Compensating winding in a dc machine is placed

None of the listed here
On yoke in the pole faces
On yoke in the interpolar gap
On armature

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