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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 IV : UTILIZATION AND TRACTION
+// CHAPTER 8: BRAKING
+
+// EXAMPLE : 8.5 :
+// Page number 811-812
+clear ; clc ; close ; // Clear the work space and console
+funcprot(0)
+
+// Given data
+area = 16.13       // Area of brakes(sq.cm/pole face)
+phi = 2.5*10**-3   // Flux(Wb)
+u = 0.2            // Co-efficient of friction
+W = 10.0           // Weight of car(tonnes)
+
+// Calculations
+a = area*10**-4                   // Area of brakes(sq.m/pole face)
+F = phi**2/(2*%pi*10**-7*a)       // Force(N)
+force = F*u                       // Braking effect considering flux and coefficient of friction(N)
+beta = u*F/(W*1000)*100           // Rate of retardation produced by braking effect(cm/sec^2)
+
+// Results
+disp("PART IV - EXAMPLE : 8.5 : SOLUTION :-")
+printf("\nBraking effect, F = %.f N", force)
+printf("\nRate of retardation produced by this braking effect, β = %.2f cm/sec^2", beta)