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1) A single-phase overhead short transmission line supplies a load of 1.36 MW at a power factor of 0.85 lagging. The total impedance of the line is 23 L58.55° Q. If the transmission efficiency is 96.53% and receiving-end voltage is 25kV, Determine: (i) The sending end voltage. [6marks] (ii) The sending-end power factor. [4marks] (iii) Draw not to scale detailed phasor diagram. [2marks] 2) A three-phase transmission line, having an impedance of 10.7 L62.14° Q per phase, supplies a load of power factor 0.8 lagging at 11kV. The sending end power is 999.1kW. If the transmission efficiency is 97%, determine: (i) The output active and reactive powers. (ii) The sending end line voltage. (iii) The sending end power factor. (iv) The percentage voltage regulation. [6 marks] [8marks] [3marks] [2marks]

1) A single-phase overhead short transmission line supplies a load of 1.36 MW at a power factor of 0.85 lagging. The total impedance of the line is 23 L58.55° Q. If the transmission efficiency is 96.53% and receiving-end voltage is 25kV, Determine: (i) The sending end voltage. [6marks] (ii) The sending-end power factor. [4marks] (iii) Draw not to scale detailed phasor diagram. [2marks] 2) A three-phase transmission line, having an impedance of 10.7 L62.14° Q per phase, supplies a load of power factor 0.8 lagging at 11kV. The sending end power is 999.1kW. If the transmission efficiency is 97%, determine: (i) The output active and reactive powers. (ii) The sending end line voltage. (iii) The sending end power factor. (iv) The percentage voltage regulation. [6 marks] [8marks] [3marks] [2marks]

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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1) A single-phase overhead short transmission line supplies a load of 1.36 MW at a power factor of 0.85 lagging. The total impedance of the line is 23 L58.55° Q. If the transmission efficiency is 96.53% and receiving-end voltage is 25kV, Determine: (i) The sending end voltage. [6marks] (ii) The sending-end power factor. [4marks] (iii) Draw not to scale detailed phasor diagram. [2marks] 2) A three-phase transmission line, having an impedance of 10.7 L62.14° Q per phase, supplies a load of power factor 0.8 lagging at 11kV. The sending end power is 999.1kW. If the transmission efficiency is 97%, determine: (i) The output active and reactive powers. (ii) The sending end line voltage. (iii) The sending end power factor. (iv) The percentage voltage regulation. [6 marks] [8marks] [3marks] [2marks]
Transcribed Image Text:1) A single-phase overhead short transmission line supplies a load of 1.36 MW at a power factor of 0.85 lagging. The total impedance of the line is 23 L58.55° Q. If the transmission efficiency is 96.53% and receiving-end voltage is 25kV, Determine: (i) The sending end voltage. [6marks] (ii) The sending-end power factor. [4marks] (iii) Draw not to scale detailed phasor diagram. [2marks] 2) A three-phase transmission line, having an impedance of 10.7 L62.14° Q per phase, supplies a load of power factor 0.8 lagging at 11kV. The sending end power is 999.1kW. If the transmission efficiency is 97%, determine: (i) The output active and reactive powers. (ii) The sending end line voltage. (iii) The sending end power factor. (iv) The percentage voltage regulation. [6 marks] [8marks] [3marks] [2marks]
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