In which of the following devices, the eddy current effect is not used

1.	In which of the following devices, the eddy current effect is not used? (1) Induction furnace (2) Magnetic braking in train (3) Electromagnet (4) Electric heater
Answer» The correct option is (4) Electric heater. Explanation: Eddy current techniques are commonly used for nondestructive examination and there are many devices which indeed use this Eddy Current Effect. For example, (1) Induction furnace (2) Magnetic braking in train; and the (3) Electromagnet However, the electric heaters do not use this effect in their nondestructive examination.

In which of the following devices, the eddy current effect is not used? (1) Induction furnace (2) Magnetic braking in train (3) Electromagnet (4) Electric heater

Answer»

The correct option is (4) Electric heater.

Explanation:

Eddy current techniques are commonly used for nondestructive examination and there are many devices which indeed use this Eddy Current Effect.

For example,

(1) Induction furnace (2) Magnetic braking in train; and the (3) Electromagnet

However, the electric heaters do not use this effect in their nondestructive examination.

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In which of the following devices, the eddy current effect is not used? (1) Induction furnace (2) Magnetic braking in train (3) Electromagnet (4) Electric heater

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