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प्रश्न
What determines the frequency of a.c. produced in a generator?
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उत्तर
The number of coil rotations, or alternating e.m.f., determines the frequency of the a.c. produced in the generator. Induced e.m.f. (e = e0 sin 2π nt) where n is the number of rotation made by coil per second and the current i = i0 sin 2π nt.
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संबंधित प्रश्न
State whether the following statement is true or false.
An electric motor converts mechanical energy into electrical energy.
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is pushed into the coil?
State two ways in the which the current alternating current and direct current?
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
State one advantage of using a.c. over d.c.
Explain the construction and working of the following. Draw a neat diagram and label it.
Electric Generator (AC)
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
Explain the construction and working of an electric generator (AC) with the help of a neat diagram.
State one factor that affects the magnitude of induced current in an AC generator.
