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// A Texbook on POWER SYSTEM ENGINEERING
// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
// DHANPAT RAI & Co.
// SECOND EDITION
// PART II : TRANSMISSION AND DISTRIBUTION
// CHAPTER 3: STEADY STATE CHARACTERISTICS AND PERFORMANCE OF TRANSMISSION LINES
// EXAMPLE : 3.4 :
// Page number 129
clear ; clc ; close ; // Clear the work space and console
// Given data
P = 15.0*10**6 // Load delivered at receiving end(W)
PF_r = 0.85 // Receiving end lagging power factor
r = 0.905 // Resistance of each conductor(ohm/km)
V_r = 132.0*10**3 // Receiving end voltage(V)
loss_per = 7.5/100 // Loss
// Calculations
loss = loss_per*P // Losses in line(W)
I = P/(3**0.5*V_r*PF_r) // Line current(A)
l = loss/(3*I**2*r) // Length of line(km)
// Results
disp("PART II - EXAMPLE : 3.4 : SOLUTION :-")
printf("\nDistance over which load is delivered, l = %.2f km", l)
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