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प्रश्न
Suggest two ways in an a.c. generator to produce a higher e.m.f.
State two ways to produce a higher e.m.f. in an a.c. generator.
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उत्तर
Two ways in an a.c generator to produce a higher e.m.f. are:
- By increasing the speed of rotation of the coil.
- By increasing the number of turns of coil.
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संबंधित प्रश्न
Name the phenomenon which is made use of in an electric generator.
The current induced in a closed circuit only if there is ______.
Name and state the principle of a simple a.c. generator. What is its use?
In an a.c. generator the speed at which the coil rotates is doubled. How would this affect
- the frequency of output voltage,
- the maximum output voltage is doubled.
What energy conversion does take place in a generator when it is in use?
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.
An a.c. generator changes the ______energy to ______ energy.
State true or false:
The frequency of AC is 50 Hz.
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is held stationary inside the coil?
