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प्रश्न
State what would happen to the direction of rotation of a motor if:
In what ways can a motor be made more powerful?
उत्तर
We can make a motor more powerful by following ways:
If the coil is wound on a soft iron core, the strength of magnetic field increases.
By increasing the number of turns of insulated copper wire of the coil
By using a powerful electromagnet in place of permanent magnet
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संबंधित प्रश्न
Explain the function of the following parts of an electric motor.
Armature
Electric motor works on the magnetic effect of electric current.
Name the device which is used to reverse the direction of current in the coil of a 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.
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.
In which electric motor appliances do we use it?
An electric motor is a device which transforms ____________.
