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  1. A 3-phase transformer has rating of 20MVA, 220 kV (star) + 33 kV (delta) with leakage reactance of 12%. The transformer reactance (in ohms) referred to each phase of the L.V. delta-connected side is _________
    1. 19.6
    2. 196
    3. 15.8
    4. 152.6
Correct Option: A

From Δ sides, Z(in ohms) = 3
(33KV)²
× 0.12
20 MVA

= 19.6



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