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diff --git a/3472/CH39/EX39.29/Example39_29.sce b/3472/CH39/EX39.29/Example39_29.sce new file mode 100644 index 000000000..520026cba --- /dev/null +++ b/3472/CH39/EX39.29/Example39_29.sce @@ -0,0 +1,27 @@ +// 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 : 1.29 :
+// Page number 710
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+hp = 50.0 // Motor rating(hp)
+N = 600.0 // Speed(rpm)
+energy = 276.0 // Stored energy(kg-m/hp)
+
+// Calculations
+g = 9.81
+T = hp*746*60/(2*%pi*N*g) // Full load torque of motor(kg-m)
+J = hp*energy*2*g/(2*%pi*N/60)**2 // Moment of inertia(kg-m^2)
+alpha = T*g/J // Angular acceleration(rad/sec^2)
+t = 2*%pi*N/(60*alpha) // Time taken to accelerate the motor to rated speed(sec)
+
+// Results
+disp("PART IV - EXAMPLE : 1.29 : SOLUTION :-")
+printf("\nTime taken to accelerate the motor to rated speed, t = %.2f sec", t)
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