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A 3-kVA, 220:110-V, 60-Hz, single-phase transformer yields these test data:
• Open-circuit test: 200 V, 1.4 A, 50 W
• Short-circuit test: 4.5 V, 13.64 A, 30 W
Determine the efficiency when the transformer delivers a load of 2 kVA at 0.85 power factor lagging.
Electrical network details: 1 single line diagrams with conductor sizes, transformer locations, consumer location, lengths, capacitors, and load, etc., 2
A 0.1µF capacitor is charged to 200 V before being connected across a 4 kΩ resistor. Determine: (a) The initial discharge current (b) The time constant of the circuit
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What is the expected peak demand for a transformer feeding the following loads? Connected kVA
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