MEDIUM
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When the plane of the armature of an a.c. generator is parallel to the field, in which it is rotating

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Important Questions on Magnetism

EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
If a single coil of large number of turns is used in a motor, it is found that the motion of the coil is not smooth but jerky.
Why is it so? How can this jerky motion be converted into a smooth circular motion?
EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Explain the function of the following parts of an electric motor.

Brushes 

EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Explain the working of an electric motor.
MEDIUM
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Draw the diagram of a simple electric motor. Label the following part:

Split rings

EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
What is the role of the split ring in an electric motor?
HARD
Physics>Electricity and Magnetism>Magnetism>Electric Motor

Explain the working of electric motor with a neat diagram.

EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
State the basic principle of an electric motor. What is the function of a split ring in an electric motor?
MEDIUM
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Draw a well labelled diagram of electric motor.
EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Explain the function of the following parts of an electric motor.

Armature

EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Explain the function of the following parts of an electric motor.

Split ring

MEDIUM
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Draw the diagram of a simple electric motor. Label the following parts:

Brushes

EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
The principle of working of a motor is
MEDIUM
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Draw a well labelled diagram of electric motor.
EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor

How can the power of an electric motor be increased? Explain with any three points.

EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Draw a labelled diagram of an electric motor.
HARD
Physics>Electricity and Magnetism>Magnetism>Electric Motor
What is an electric motor? Describe its method of working with a diagram.
EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Write the principle of an electric motor.
EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
Write the principle of working of an electric motor.
EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
An electric motor converts:
EASY
Physics>Electricity and Magnetism>Magnetism>Electric Motor
An electric device which converts electric energy into mechanical energy is called