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How are instrument transformers different from shunts and multipliers?

How are instrument transformers different from shunts and multipliers? Correct Answer readings are independent of component values

Instrument transformers can be used for extending the range of the A.C. instruments. In instrument transformers, readings are independent of the values of R, L, and C. But in the case of shunts and multipliers, the readings depend on the values of circuit constants.

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