what is hall effect?where it is use in power plant?

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what is hall effect?where it is use in power plant?..

There are mostly two types of magnetic pickups for speed
measuring.
1. Passive sensor
2. Actice sensor
In active sensor, hall effect is used to get frequency
signal.

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what is hall effect?where it is use in power plant?..

Answer / mithilesh kumar

in power plant it's used for turbine speed(RPM).

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