3-Phase Transmission Line Voltage and Current Quiz
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Questions and Answers

What is the power factor of the line?

  • 0.90 lagging
  • 0.85 lagging (correct)
  • 0.85 leading
  • 0.90 leading

    • What is the total impedance of the line per phase?

  • 140 $ ext{ohms}$
  • 190 $ ext{ohms}$
  • 112 $ ext{ohms}$ (correct)
  • 48 $ ext{ohms}$

    • What is the capacitive reactance of the line per km per phase?

  • 3 $ ext{ohms}$
  • 2 $ ext{ohms}$ (correct)
  • 4 $ ext{ohms}$
  • 5 $ ext{ohms}$

    • What are the sending end voltage and current of the line?

    <p>Sending end voltage: 121.1 kV, Sending end current: 416.4 A</p> Signup and view all the answers

    Calculate the resistance, inductive reactance, and capacitive shunt admittance of the line per phase.

    <p>Resistance: 16.8 ohm/km, Inductive reactance: 7.2 ohm/km, Capacitive shunt admittance: 31 mS/km</p> Signup and view all the answers

    What is the total power loss in the line?

    <p>Total power loss: 4.67 MW</p> Signup and view all the answers

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