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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/EX39.20 | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '3472/CH39/EX39.20')
| -rw-r--r-- | 3472/CH39/EX39.20/Example39_20.sce | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/3472/CH39/EX39.20/Example39_20.sce b/3472/CH39/EX39.20/Example39_20.sce new file mode 100644 index 000000000..8020c90c2 --- /dev/null +++ b/3472/CH39/EX39.20/Example39_20.sce @@ -0,0 +1,31 @@ +// 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)
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