B1. An electrical engineer tested a 2 kVA, 230/115 V single-phase transformer, and the test results are given in Table B

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B1 An Electrical Engineer Tested A 2 Kva 230 115 V Single Phase Transformer And The Test Results Are Given In Table B 1 (63.07 KiB) Viewed 23 times

B1. An electrical engineer tested a 2 kVA, 230/115 V single-phase transformer, and the test results are given in Table Bl. Voltage Current Power Open circuit test (Low voltage side open-circuited) 230 V 0.45 A 30 W Short circuit test 13.2 V 6.0 A 20.1 W (Low voltage side short-circuited) Table B1 By using an approximate equivalent circuit, evaluate (a) the equivalent circuit of the transformer referred to high voltage side, (7 marks) (b) the equivalent circuit of the transformer referred to low voltage side, (4 marks) (c) the voltage regulation at rated load and power factor of 0.8 lagging, (6 marks) and (d) the efficiency of the transformer in part (c). (3 marks)