1.

For a P.T. the turns ratio is defined as the _________(a) n = ^Np ⁄ Ns(b) n =^1 ⁄ Np(c) n = Ns(d) n =^Ns ⁄ NpI got this question during an online interview.I need to ask this question from Ratios of Instrument Transformers topic in section Extension of Instrument Ranges of Electrical Measurements

Answer»

Correct choice is (a) n = ^NP ⁄ Ns

To explain: For a potential transformer, the turns ratio is defined as the ratio of the NUMBER of turns in the PRIMARY WINDING to the number of turns in the secondary winding.

n = ^Np ⁄ Ns

where, n is the turns ratio

Np is the primary turns

Ns is the secondary turns.


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