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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
What is the Principle of an Electric motor?
What is the role of the split ring in an electric motor?
Name some devices in which electric motors are used
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.
Split ring
Label the four parts of an electric motor
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 is the core of the coil of an electric motor made?
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:
In what ways can a motor be made more powerful?
What are the special features of commercial electric motors?
Tell the odd one out. Give a proper explanation.
Name some of the devices in which electric motor are used.
Electric motor : converts electrical energy into mechanical energy : : Electric generator : _______
Right or wrong sentence.
Electro chemicals are devices that convert electrical energy into mechanical energy.
In which electric motor appliances do we use it?
Observe the figure and write the answers to the questions asked.
- The construction shown in the figure is of which device?
- Explain the principle on which this device works.
- Write any three uses of this device.
An electric motor converts ______.
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 ____________.
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 moving part of an electric motor is called ______.
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?
