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Q.

Which of the following is not an application of eddy currents

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a

Speedometer of automobiles

b

X-ray crystallography

c

Induction furnace

d

Galvanometer damping 

answer is D.

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Detailed Solution

Eddy currents are utilized include use in energy meters, automobile speedometers, induction alternating current (AC) motors, free-fall devices, as a way of detecting coins in vending machines, to increase temperatures uniformly in induction furnaces, and in proximity/displacement sensors.

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