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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3472/CH39/EX39.24/Example39_24.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '3472/CH39/EX39.24/Example39_24.sce')
| -rw-r--r-- | 3472/CH39/EX39.24/Example39_24.sce | 26 |
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diff --git a/3472/CH39/EX39.24/Example39_24.sce b/3472/CH39/EX39.24/Example39_24.sce new file mode 100644 index 000000000..089658642 --- /dev/null +++ b/3472/CH39/EX39.24/Example39_24.sce @@ -0,0 +1,26 @@ +// 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 : 1.24 :
+// Page number 706
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+theta_f1 = 40.0 // Temperature rise(°C)
+T = 100.0 // Heating time constant(min)
+rated_2 = 2.0 // Motor at twice the continuously rating
+
+// Calculations
+loss_cu = 2.0**2 // Copper loss at twice full load in terms of W
+loss_total = loss_cu+1 // Total losses at full load in terms of W
+theta_f2 = theta_f1*loss_total/rated_2 // θ_f2(°C)
+t = log(1-(theta_f1/theta_f2))*(-T) // Time for which motor can run at twice the continuously rated output without overheating(min)
+
+// Results
+disp("PART IV - EXAMPLE : 1.24 : SOLUTION :-")
+printf("\nMotor can run at twice the continuously rated output without overheating for time, t = %.f min", t)
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