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प्रश्न
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.
विकल्प
True
False
उत्तर
False
Correct Statement: The speed of rotation of coil can be increased by increasing the area of the coil.
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संबंधित प्रश्न
Draw figure ‘Electric motor’ and working
Explain the function of the following parts of an electric motor.
Armature
Of what substance are the brushes of an electric motor made?
What is the role of the spilt ring in an electric motor?
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.
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.
Electric motors are devices that convert electrical energy into mechanical energy.
What is an electric motor?
Direction of rotation of a coil in electric motor is determined by ____________.
