A 3-phase, 60 Hz, 40 km long overhead line supplies 475 kW at 11 kV, 0.9 p.f. lagging. The line resistance is 50 per phase and line inductance is 15 mH per phase. Calculate the Reactance of the Line, Current flowing through the transmission line, Sending end voltage, Voltage regulation and Efficiency of transmission.

A 3-phase, 60 Hz, 40 km long overhead line supplies 475 kW at 11 kV, 0.9 p.f. lagging. The line resistance is 50 per phase and line inductance is 15 mH per phase. Calculate the Reactance of the Line, Current flowing through the transmission line, Sending end voltage, Voltage regulation and Efficiency of transmission.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

Question

A 3-phase, 60 Hz, 40 km long overhead line supplies
475 kW at 11 kV, 0.9 p.f. lagging. The line resistance
is 50 per phase and line inductance is 15 mH per
phase. Calculate the Reactance of the Line, Current
flowing through the transmission line, Sending end
voltage, Voltage regulation and Efficiency of
transmission.
Inductive Reactance
Current flowing through the transmission line
Sending end Voltage
Voltage Regulation of Transmission line
Transmission line efficiency

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