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A single-phase transformer of 3 kVA, 60 Hz, has a voltage ratio on open circuit of...

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Electrical Engineering

A single-phase transformer of 3 kVA, 60 Hz, hasa voltage ratio on open circuit of 240 / 120 V.The primary and secondary resistances are 0.25 Ωand 0.05 Ω respectively, the corresponding leakagereactance being 0.75 Ω and 0.18Ω. The transformer delivers current to the load at a 0.9power factor lagging.

  1. Determine the voltage across theload.                                                               
  2. Determine the power dissipated by theload.                                                        
  3. Determine percentage voltage regulation referred to thesecondary side.

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