A 48 KVA, 1ϕ1ϕ, 50 Hz, 1600V/160V transformer has primary resistance of 0.5Ω0.5Ω and secondary resistance of 0.01Ω0.01Ω. Calculate the full load efficiency of transformer at unity P.F. If the Iron losses are 650 watts.
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If transformer has a full load secondary output of 300 VA ... The core loss of the single phase 2200/220-V, 50-Hz transformer is measured using the ... resistance of 0.05 Ω in the high voltage winding and 0.0125 Ω in the low voltage winding. Calculate; a) the efficiency of the transformer at the rated load and unity power factor.
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