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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
Draw figure ‘Electric motor’ and working
Explain the function of the following parts of an electric motor.
Split ring
A motor converts one form of energy into another. Name the two forms.
State whether the following statement is true or false:
An electric motor converts mechanical energy into electrical energy.
In a d.c. motor, why must the current to the coil be reversed twice during each rotation?
State whether true or false. If false, correct the statement.
A generator converts mechanical energy into electrical energy.
Direction of rotation of a coil in electric motor is determined by ____________.
How can the speed of rotation of a coil be increased? Write at least three methods.
The most suitable material for making permanent magnets is ______.
Define electric motor.
