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प्रश्न
The device used for producing electric current is called a ______.
पर्याय
generator
galvanometer
ammeter
motor
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उत्तर
The device used for producing electric current is called a generator.
Explanation:
- A generator is a device that transforms mechanical energy into electrical energy.
- A galvanometer is a device that detects the existence of electricity in a circuit.
- An ammeter is a device that measures the amount of electric current flowing across a circuit.
- A motor is a piece of machinery that turns electrical energy into mechanical energy.
As a result, the generator is the correct solution.
संबंधित प्रश्न
Which sources produce alternating current?
A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each______.
Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes?
What is the function of brushes in an electric generator?
What is the major difference between the simple alternator and most practical alternators?
Why are Thermal Power Stations usually located near a river?
State two ways in the which the current alternating current and direct current?
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.
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.
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
A flat coil of wire rotates at a constant speed about an axis perpendicular to a uniform magnetic field. Draw a graph to show how the induced e.m.f. varies relative to the positions of the coil during its one complete rotation. At what position of the coil, the e.m.f. has the maximum value?
State true or false:
The frequency of AC is 50 Hz.
A device for producing electric current is ______.
Draw a neat diagram of an AC generator and explain its working.
