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)
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]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8a3539ed-7d60-4198-b9c7-ffeecf8421c8%2F590b310d-11bc-4a95-977e-eae71a8fd1eb%2F3lhkyfp_processed.jpeg&w=3840&q=75)
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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