What are the classifications of electrical measuring instruments?

What are the classifications of electrical measuring instruments?
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1 Answer

Answer :

a. Absolute instruments. These instruments give the value of the quantity to be measure in terms of the constant of the instrument and their deflection only. There is no any calibrated scale.
b. Secondary instruments. Secondary instruments are those, which are calibrated in comparison with some absolute instrument so as to indicate the electrical quantity to be measured with the deflection of needle or pointer of that meter over a calibrated scale.
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