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#24 | Eddy Currents & Applications
(Physics) > Electromagnetic Induction

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Related Practice Questions :

Which of the following is not based on the application of eddy currents?

1. Speedometer

2. Dead-beat galvanometer

3. Energy meter

4. Tangent galvanometer

 52%
Level 3: 35%-60%
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The slotting processes in a metallic sheet results in:

1. The increase of the resistance in the path for circulation of current.
2. Decrease in the strength of eddy current.
3. A feeble in the electromagnetic damping.
4. All of these
 83%
Level 1: 80%+
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Links

Eddy currents are produced in a material when it is:
 

1. heated.
2. placed in an electric field.
3. placed in a uniform constant magnetic field.
4. placed in a time-varying magnetic field.

 79%
Level 2: 60%+
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Eddy currents are used in:

1. Induction furnace

2. Electromagnetic brakes

3. Speedometers

4. All of these

 94%
Level 1: 80%+
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
 
Assertion (A): Iron loss is minimized by using a laminated core.
Reason (R): Lamination of core restricts eddy current.

In the light of the above statements choose the correct answer from the options given below:
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.
 90%
Level 1: 80%+
Hints

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