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प्रश्न
Write two examples of their useful applications .
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उत्तर १
Eddy currents are used Magnetic braking in trains, Electromagnetic damping, Induction furnace, Electric power meters.
उत्तर २
Uses of Eddy Current:-
- Induction furnace:- The heating effect of eddy current is used for melting metal in induction furnace.
- Electric Brakes:- It is an efficient system of brakes employed in electric trains when the train is to be stopped, a strong magnetic field is applied to the rotating drum. This results in the generation of large eddy currents
संबंधित प्रश्न
Give one example of use of eddy currents.
A metallic bob A oscillates through the space between the poles of an electromagnet (See the figure). The oscillations are more quickly damped when the circuit is on, as compared to the case when the circuit is off. Explain.
How can the disadvantages of eddy currents be minimized?
In which of the following devices, the eddy current is not used ______
Why and where are eddy currents are undesirable? How are they minimized?
The plane in which eddy currents are produced in a conductor is inclined to the plane of the magnetic field at an angle equal to ______.
Identify the wrong statement.
Two simple pendula of length L and 4L are pulled aside to the right and are at rest so that they make an angle 30° with the vertical. They are then released simultaneously at time t = 0. The time after which they will be in phase is ______.
A metal plate is getting heated. It can be because ______.
- a direct current is passing through the plate.
- it is placed in a time varying magnetic field.
- it is placed in a space varying magnetic field, but does not vary with time.
- a current (either direct or alternating) is passing through the plate.
