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प्रश्न
State whether the following statement is true or false.
An electric motor converts mechanical energy into electrical energy.
विकल्प
True
False
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उत्तर
False
Explanation:
An electric motor converts electrical energy into mechanical energy.
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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
Electric motor works on the magnetic effect of electric current.
What is the other name of the split ring used in an electric motor?
What is the function of a commutator in an electric motor made ?
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?
State what would happen to the direction of rotation of a motor if:
the current were reversed
An electric motor is a device which transforms:
mechanical energy to electrical
heat energy to electrical energy
electrical energy to heat energy only
electrical energy to mechanical energy
Tell the odd one out. Give proper explanation.
Loud speaker, Microphone, Electric motor, Magnet.
Which device is used to produce electricity? Describe with a neat diagram.
Name some of the devices in which electric motor are used.
Electric motor : converts electrical energy into mechanical energy : : Electric generator : _______
Electric motors are devices that convert electrical energy into mechanical energy.
What is an electric motor?
In which electric motor appliances do we use it?
Which of the following converts electrical energy into mechanical energy?
An electric motor converts ______.
State whether true or false. If false, correct the statement.
A generator converts mechanical energy into electrical energy.
State whether true or false. If false, correct the statement.
The speed of rotation of an electric motor can be increased by decreasing the area of the coil.
List the main parts of an electric motor.
An electric motor is a device which transforms ____________.
Direction of rotation of a coil in electric motor is determined by ____________.
Commercial electric motors do not use ____________.
Material of the core of a strong magnet is ____________.
How can the speed of rotation of a coil be increased? Write at least three methods.
Define electric motor.
Observe the following diagram and answer the questions.
- Construction of which equipment does the above diagram show?
- On which principle does this equipment work?
- According to which law the coil ABCD rotates?
- Write the law in your own words.
- Where is this equipment used?
