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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 : 1.21 :
// Page number 705
clear ; clc ; close ; // Clear the work space and console
// Given data
t = 1.0 // Time(hour)
hp = 15.0 // Motor rating(hp)
T = 2.0 // Time constant(hour)
theta_f = 40.0 // Temperature rise(°C)
// Calculations
P = (1.0/(1-exp(-t/T)))**0.5*hp // One-hour rating of motor(hp)
// Results
disp("PART IV - EXAMPLE : 1.21 : SOLUTION :-")
printf("\nOne-hour rating of motor, P = %.f hp\n", P)
printf("\nNOTE: Changes in the obtained answer from that of textbook is due to more approximation in the textbook solution")
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