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प्रश्न
Of what substance are the brushes of an electric motor made?
उत्तर
The brushes of an electric motor are made of carbon.
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संबंधित प्रश्न
Explain the function of the following parts of an electric motor.
Brushes
Label the four parts of an electric motor
Electric motor works on the magnetic effect of electric current.
What is the other name of the split ring used in an electric motor?
In an electric motor, which of the following remains fixed and which rotates with the coil?
Commutator ; Brush
In a d.c. motor, why must the current to the coil be reversed twice during each rotation?
In an electric motor, the direction of current in the coil changes once in each:
two rotations
one rotation
half rotation
one-four rotation
Commercial electric motors do not use ____________.
How can the speed of rotation of a coil be increased? Write at least three methods.
The moving part of an electric motor is called ______.
