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प्रश्न
Name any four appliances where electric motor is used.
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उत्तर
Electric motors are used in domestic appliances such a mixer, blender and washing machine. DC motor is used in an electric fan, hair dryer, record player, tape recorder and blower.
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संबंधित प्रश्न
Draw figure ‘Electric motor’ and working
What is the Principle of an Electric motor?
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 construction and working of an electric motor.
Explain the function of the following parts of an electric motor.
Armature
Explain the function of the following parts of an electric motor.
Brushes
Explain the function of the following parts of an electric motor.
Split ring
Label the four parts of an electric motor
State whether the following statement is true or false:
An electric motor converts mechanical energy into electrical energy.
Name the device which is used to reverse the direction of current in the coil of a motor?
What is the other name of the split ring used in an electric motor?
Of what substance are the brushes of an electric motor made?
What is the role of the spilt ring in an electric motor?
Fill in the following blank with suitable words:
Fleming's Rule for the motor effect uses the .......... hand.
What is the principle of an electric motor?
In a d.c. motor, why must the current to the coil be reversed twice during each rotation?
State what would happen to the direction of rotation of a motor if:
the current were reversed
State what would happen to the direction of rotation of a motor if:
both current and magnetic field were reversed simultaneously.
State what would happen to the direction of rotation of a motor if:
In what ways can a motor be made more powerful?
What is an electric motor? With the help of a labelled diagram, describe the working of a simple electric motor
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.
Draw a labelled diagram of an electric motor.
Electric motor : converts electrical energy into mechanical energy : : Electric generator : _______
Electric motors are devices that convert electrical energy into mechanical energy.
In which electric motor appliances do we use it?
State whether true or false. If false, correct the statement.
A generator converts mechanical energy into electrical energy.
Draw a labelled circuit diagram of a simple electric motor and explain its working. In what way these simple electric motors are different from commercial motors?
The most suitable material for making permanent magnets is ______.
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?
