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B1. An electrical engineer tested a 50 kVA, 1000/250 V, 50 Hz, single-phase transformer, and the test results are given
Posted: Mon May 09, 2022 7:48 am
by answerhappygod
- B1 An Electrical Engineer Tested A 50 Kva 1000 250 V 50 Hz Single Phase Transformer And The Test Results Are Given 1 (133.79 KiB) Viewed 21 times
B1. An electrical engineer tested a 50 kVA, 1000/250 V, 50 Hz, single-phase transformer, and the test results are given in Table B1. Test Voltage Current Power 250 V 5A 200 W Open-circuit test (Low Voltage Side Measurement) Short-circuit test 90 V 50A 1800 W (High Voltage Side Measurement) Table B1 By using an approximate equivalent circuit, evaluate (a) the equivalent core loss resistance and magnetizing reactance referred (6 marks) to high voltage side, (b) the equivalent winding resistance and flux leakage reactance referred (3 marks) to high voltage side, (c) the voltage regulation at 75% full load and 0.8 power factor lagging, (6 marks) and (d) the output power at maximum efficiency. (5 marks)