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Network Elements and the Concept of Circuit

  1. A single phase transformer is connected as shown in fig. when a voltage of 100 V (rms) was applied across AB, the voltmeter connected across AC measured 100 V (rms). The turns ratio N1: N2 is—


    1. 1: 1
    2. 1: 2
    3. 2: 1
    4. 4: 1
Correct Option: B

Since the reading of voltameter is 100 Vrms it means the output voltage is equal to
V2 = 100 + 100 = 200 Vrms

So,
V2
=
N2
=
200
=
2

V1N11001

or N1: N2 = 1: 2



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