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प्रश्न
In a d.c. motor, why must the current to the coil be reversed twice during each rotation?
उत्तर
In a D.C. electric motor, the reversing of current in the coil is repeated after every half rotation. This causes the coil to continue its rotation as long as the current from the battery is passed through it. The rotating coil can drive a machine connected to it.
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संबंधित प्रश्न
What is the role of the split ring in an electric motor?
State whether the following statement is true or false.
An electric motor converts mechanical energy into electrical energy.
Explain the function of the following parts of an electric motor.
Brushes
Of what substance are the brushes of an electric motor made?
Of what substance is the core of the coil of an electric motor made?
In an electric motor, which of the following remains fixed and which rotates with the coil?
Commutator ; Brush
Fill in the following blank with suitable words:
A motor contains a kind of switch called a .......... which reverses the current every half .......... .
What is the principle of an electric motor?
Tell the odd one out. Give proper explanation.
Loud speaker, Microphone, Electric motor, Magnet.
Name some of the devices in which electric motor are used.
