Question

State the merits of eddy currents.

Answer 1

Dissipate electrical energy in the form of heat.

Overheating of metallic cores of transformers, electric motors and other such devices.

In order to avoid the overheating of the core,metallic sheets are taken in the form of very thin sheets.These sheets are electrically insulated.

The cores are insulated with some insulating material as a result heat won’t get transferred to surroundings.

These cores are known as laminated cores.

By using these cores eddy currents are reduced as a result heat dissipation is reduced.

Answer 2

$\underline{\mathfrak}{answer}$

$\underline{\mathfrak}{Merits\: of\:eddy \:currents }$ :-

(i) These are used to stop the train by applying electric breaks.
(ii) These are used in induction motor.

(iii) These are used in induction furnace.

(iv) The working of speedometer is based on these currents.

(v) In hospitals, these currents are used for diathermy.

(vi) The working of energy is based these currents.


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