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प्रश्न
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.
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उत्तर
- The figure shows the construction of an electric generator.
- Principle of electric generator: Electric generator works on the principle of electromagnetic induction. When the coil of the electric generator rotates in a magnetic field, the magnetic field induces a current in this coil. This induced current then flows into the circuit connected to the coil.
- Uses of electric generator are-
- Providing backup energy for emergencies.
- Powering construction sites.
- Powering nuclear reactor plants.
- Providing backup for hospitals and other office buildings
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संबंधित प्रश्न
State the principle of an electric generator.
Which sources produce alternating current?
The device used for producing electric current is called a ______.
The essential difference between an AC generator and a DC generator is that
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is pushed into the coil?
Why are Thermal Power Stations usually located near a river?
Draw the labelled diagram of an A.C. generator. With the help of this diagram, explain the construction and working of an A.C. generator.
An electric generator converts:
(a) electrical energy into mechanical energy.
(b) mechanical energy into heat energy.
(c) electrical energy into chemical energy.
(d) mechanical energy into electrical energy.
State whether the following statement are true of false:
A wire with a green insulation is usually the live wire.
The current induced in a closed circuit only if there is ______.
What determines the frequency of a.c. produced in a generator?
Draw a labelled diagram of a simple a.c. generator.
Suggest two ways in an a.c. generator to produce a higher e.m.f.
Explain the difference:
AC generator and DC generator.
State change that you would make to convert an A.C. generator into a D.C. generator. Illustrate the change by a diagram.
A coil of insulated copper wire is connected to a galvanometer forming a loop and a magnet is:
A: Held stationary
B: Moved away along its axis
C: Moved towards along its axis
D: There will be an induced current in
To convert an AC generator into DC generator ____________.
An AC generator is provided with ______ slip rings that rotate with the coil.
