EASY
Earn 100

Explain about DC motors.

Important Questions on Electromagnetism

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Science>Physics>Electromagnetism>Simple D.C. Motor
State two ways to increase the speed of rotation of a DC motor.
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Science>Physics>Electromagnetism>Simple D.C. Motor
Draw a neat labelled diagram of a d.c. motor.
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Science>Physics>Electromagnetism>Simple D.C. Motor
The principle of working of a motor is
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Science>Physics>Electromagnetism>Simple D.C. Motor
Write any one use of a d.c. motor.
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Science>Physics>Electromagnetism>Simple D.C. Motor
What is the role of the split ring in an electric motor?
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Science>Physics>Electromagnetism>Simple D.C. Motor
Electric motor can be is used in
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Science>Physics>Electromagnetism>Simple D.C. Motor
A commutator changes the direction of current in
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Science>Physics>Electromagnetism>Simple D.C. Motor
The armature of an electric motor is connected to the:
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Science>Physics>Electromagnetism>Simple D.C. Motor
The component that reverses the direction of current in an electric motor after every half rotation is the:
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Science>Physics>Electromagnetism>Simple D.C. Motor

Electric motor converts electrical enerygy into_____energy.

MEDIUM
Science>Physics>Electromagnetism>Simple D.C. Motor
Commercial electric motors do not use:
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Science>Physics>Electromagnetism>Simple D.C. Motor
Electric motor converts ____________.
MEDIUM
Science>Physics>Electromagnetism>Simple D.C. Motor
When is the back emf of an electric motor the greatest?
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Science>Physics>Electromagnetism>Simple D.C. Motor
To convert an AC generator into DC generator:
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Science>Physics>Electromagnetism>Simple D.C. Motor
In an electric motor, the energy transformation is :
EASY
Science>Physics>Electromagnetism>Simple D.C. Motor
A commutator changes the direction of current in the coil of
EASY
Science>Physics>Electromagnetism>Simple D.C. Motor
The principle of working of a motor is
EASY
Science>Physics>Electromagnetism>Simple D.C. Motor
To convert an AC generator into DC generator,
EASY
Science>Physics>Electromagnetism>Simple D.C. Motor
In which device, split ring is used?
MEDIUM
Science>Physics>Electromagnetism>Simple D.C. Motor
When the plane of the armature of an a.c. generator is parallel to the field, in which it is rotating