engineering recuitment GATE EE 2023-24 Test Series Electrical Machines Transformer Transformer on Load
The figure shows an ideal 3 winding transformer. The three winding 1, 2, 3 of the transformer are wound on the same core as shown. The turns ratio of N1 : N2 : N3 is 4 : 2 : 1. A resistor of 10 Ω is connected across winding 2. A capacitor of reactance 2.5 Ω is connected across winding-3. Winding 1 is connected across a 400 V supply. If the supply voltage phasor V1 = 400 ∠ 0° the supply current phasor I1 is given by
1
– 10 + j10
2
– 10 – j10
3
10 + j10
4
10 – j10