A balanced load of 30 MW is supplied at 132 kV, 50 Hz and 0-85 p.f....

  

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A balanced load of 30 MW is supplied at 132 kV, 50 Hz and 0-85 p.f. lagging by means of a transmission line. The series impedance of a single conductor is (20+ j52) ohms and the total phases-neutral admittance is 315 micro-siemens. Shunt leakage may be neglected. Using the nominal T approximation, calculate the line voltage at the sending end of the line. O 145 kV 135 kV O 147 kV O 140 kV O 149 kV O 138 kv O 133 kV O 143 kV * 8 points If the load is removed and the sending end voltage remains constant, find * 4 points the percentage rise in voltage at the receiving end. 10% 5% 7% 11% O 6% 9% O 8% O 12% A balanced load of 30 MW is supplied at 132 kV, 50 Hz and 0-85 p.f. lagging by means of a transmission line. The series impedance of a single conductor is (20+ j52) ohms and the total phases-neutral admittance is 315 micro-siemens. Shunt leakage may be neglected. Using the nominal T approximation, calculate the line voltage at the sending end of the line. O 145 kV 135 kV O 147 kV O 140 kV O 149 kV O 138 kv O 133 kV O 143 kV * 8 points If the load is removed and the sending end voltage remains constant, find * 4 points the percentage rise in voltage at the receiving end. 10% 5% 7% 11% O 6% 9% O 8% O 12%

Answer rating: 100% (QA)

The correct answer is d 140 k V The calculation is as follows V I Z V L ... View the full answer