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प्रश्न
In which electric motor appliances do we use it?
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उत्तर
Appliances that uses electric motor are Dryers, vacuum cleaners, fans, air conditioners, refrigerators, freezers, etc.
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संबंधित प्रश्न
What is the Principle of 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.
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
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.
What is the function of a commutator in an electric motor made ?
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:
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:
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
In an electric motor, the direction of current in the coil changes once in each:
two rotations
one rotation
half rotation
one-four rotation
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
Which device is used to produce electricity? Describe with a neat diagram.
Study the following principle and answer the question.
A force is excreted on the current carrying conductor. The direction of this force depends on both the direction of the current and the direction of the magnetic field. This force is maximum when the direction of current is perpendicular to the direction of the magnetic field.
a) By which law we can determine the direction of force excreted on the current carrying conductor.
b) In which electrical equipment this principle is used.
c) Draw a diagram representing construction of this equipment.
d) Write the working of this equipment in brief.
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.
What is an electric motor?
Which of the following converts electrical energy into mechanical energy?
State whether true or false. If false, correct the statement.
A generator converts mechanical energy into electrical energy.
An electric motor is a device which transforms ____________.
Direction of rotation of a coil in electric motor is determined by ____________.
In an electric motor, to make the coil rotating continuously in the same direction, the current is reversed in the coil after every half rotation by a device called ____________.
Material of the core of a strong magnet is ____________.
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?
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 ______.
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?
