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प्रश्न
Name and state the principle of a simple a.c. generator. What is its use?
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उत्तर
An A.C. generator works on the principle of 'electromagnetic induction'.
Statement: Whenever a coil is rotated in a magnetic field, the magnetic flux linked with the coil changes, and therefore, an EMF is induced between the ends of the coil. Thus, a generator acts like a source of current if an external circuit containing load is connected between the ends of its coil.
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संबंधित प्रश्न
The device used for producing electric current is called a ______.
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.
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
Explain the difference:
AC generator and DC generator.
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.
Draw a neat labeled diagram of an A.C. generator
To convert an AC generator into DC generator ____________.
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is held stationary inside the coil?
State one factor that affects the magnitude of induced current in an AC generator.
