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प्रश्न
Observe the figure and answer the following questions.
a) Identify the machine shown in figure.
b) Write a use of this machine.
c) How transformation of energy takes place in this machine.
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उत्तर
a) The instrument shown in figure is generator.
b) This machine is used to generate electricity.
c) The generator generates electricity through following transformations :
Mechanical Energy → Electrical Energy
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संबंधित प्रश्न
Name some sources of direct current.
Which sources produce alternating current?
The device used for producing electric current is called a ______.
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is pushed into the coil?
Name the phenomenon which is made use of in an electric generator.
What change should be made in an a.c. generator so that it may become a d.c. generator?
Explain the principle of an electric generator.
A d.c. generator is based on the principle of:
(a) electrochemical induction
(b) electromagnetic induction
(c) magnetic effect of current
(d) heating effect of current
The frequency of alternating current (a.c.) supply in India is:
(a) 0 Hz
(b) 50 Hz
(c) 60 Hz
(d) 100 Hz
State whether the following statement are true of false:
A wire with a green insulation is usually the live wire.
Draw a labelled diagram of a simple a.c. generator.
What energy conversion does take place in a generator when it is in use?
Explain the construction and working of the following. Draw a neat diagram and label it.
Electric Generator (AC)
Explain the difference:
AC generator and DC generator.
Explain the construction and working of an electric generator (AC) with the help of a neat diagram.
State change that you would make to convert an A.C. generator into a D.C. generator. Illustrate the change by a diagram.
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 AC generator is provided with ______ slip rings that rotate with the coil.
