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प्रश्न
The device used for producing electric current is called a ______.
विकल्प
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.
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संबंधित प्रश्न
State the principle of an electric generator.
Name some sources of direct current.
Explain the underlying principle and working of an electric generator by drawing a labelled diagram. What is the function of brushes?
Name the device which converts mechanical energy into electric energy.
What change should be made in an a.c. generator so that it may become a d.c. generator?
Each one of the following changes will increase emf (or voltage) in a simple generator except:
(a) increasing the number of turns in the armature coil
(b) winding the coil on a soft iron armature
(c) increasing the size of the gap in which the armature turns
(d) increasing the speed of rotation
Name and state the principle of a simple a.c. generator. What is its use?
What determines the frequency of a.c. produced in a generator?
Draw a labelled diagram of a simple a.c. generator.
State one advantage of using a.c. over d.c.
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 change that you would make to convert an A.C. generator into a D.C. generator. Illustrate the change by a diagram.
The part of the AC generator that passes the current from the armature coil to the external circuit is ______.
A coil of insulated copper wire is connected to a galvanometer forming a loop and a magnet is:
A: Held stationary
B: Moved away along its axis
C: Moved towards along its axis
D: There will be an induced current in
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is withdrawn from inside the coil?
Observe the following diagram and answer the questions.
- Explain the construction of the equipment shown in the figure.
- How is AC generated?
State one factor that affects the magnitude of induced current in an AC generator.
