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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 1: INDUSTRIAL APPLICATIONS OF ELECTRIC MOTORS
+
+// EXAMPLE : 1.20 :
+// Page number 702
+clear ; clc ; close ; // Clear the work space and console
+funcprot(0)
+
+// Given data
+V = 500.0         // Shunt motor voltage(V)
+load = 400.0      // Hoist load(kg)
+speed = 2.5       // Hoist raised speed(m/sec)
+n_motor = 0.85    // Efficiency of motor
+n_hoist = 0.75    // Efficiency of hoist
+
+// Calculations
+P_output = load*speed*9.81                     // Power output from motor(W)
+P_input = P_output/(n_motor*n_hoist)           // Motor input(W)
+I = P_input/V                                  // Current drawn from supply(A)
+output_G = load*speed*9.81*n_motor*n_hoist     // Generator output(W)
+R = V**2/output_G                              // Resistance required in the armature circuit for rheostatic braking(ohm)
+
+// Results
+disp("PART IV - EXAMPLE : 1.20 : SOLUTION :-")
+printf("\nCurrent drawn by the motor from supply = %.1f A", I)
+printf("\nResistance required in the armature circuit for rheostatic braking, R = %.f ohm", R)