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Diffstat (limited to '3472/CH39/EX39.2')
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diff --git a/3472/CH39/EX39.2/Example39_2.sce b/3472/CH39/EX39.2/Example39_2.sce new file mode 100644 index 000000000..89227e8c0 --- /dev/null +++ b/3472/CH39/EX39.2/Example39_2.sce @@ -0,0 +1,29 @@ +// 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 : 1.2 :
+// Page number 680
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+I_sc = 6.0 // Short circuit current = 6 times full load current
+s_fl = 5.0 // Full load slip(%)
+tap = 60.0 // Auto-tranformer tapping(%)
+
+// Calculations
+// Case(a)
+I_s_fl_a = I_sc/3.0 // I_s/I_fl
+T_s_fl_a = I_s_fl_a**2*s_fl/100 // Starting torque in terms of full-load torque with star-delta starter
+// Case(b)
+I_s_fl_b = tap/100*I_sc // I_s/I_fl
+T_s_fl_b = I_s_fl_b**2*s_fl/100 // Starting torque in terms of full-load torque with auto-transformer starter
+
+// Results
+disp("PART IV - EXAMPLE : 1.2 : SOLUTION :-")
+printf("\nCase(a): Starting torque in terms of full-load torque with star-delta starter, I_s/I_fl = %.1f ", T_s_fl_a)
+printf("\nCase(b): Starting torque in terms of full-load torque with auto-transformer starter, I_s/I_fl = %.3f ", T_s_fl_b)
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