- Bl An Electrical Engineer Tested A 50 Kva 1000 250 V 50 Hz Single Phase Transformer And The Test Results Are Given 1 (385.36 KiB) Viewed 35 times
a to d ,thank you !!
Bl. An electrical engineer tested a 50 kVA, 1000/250 V, 50 Hz, single-phase transformer, and the test results are given in Table Bl. Test Voltage Current Power 250 V 5A 200 W Open-circuit test (Low Voltage Side Measurement) Short-circuit test 90 V 50 A 1800 W (High Voltage Side Measurement) Table BI 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)