From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 2642/CH5/EX5.2/Ex5_2.sce | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 2642/CH5/EX5.2/Ex5_2.sce

(limited to '2642/CH5/EX5.2')

diff --git a/2642/CH5/EX5.2/Ex5_2.sce b/2642/CH5/EX5.2/Ex5_2.sce
new file mode 100755
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+++ b/2642/CH5/EX5.2/Ex5_2.sce
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+// FUNDAMENTALS OF ELECTICAL MACHINES 
+// M.A.SALAM 
+// NAROSA PUBLISHING HOUSE 
+// SECOND EDITION
+
+// Chapter 5 : DIRECT CURRENT MOTORS 
+// Example : 5.2 
+
+clc;clear; // clears the console and command history 
+// Given data 
+I = 20      // total current in A
+V_t = 250;  // supply voltage in volt 
+R_sh = 200;  // shunt field resistance in Ω
+R_a = 0.3;   // armature resistance in Ω
+
+// caclulations 
+ I_sh = V_t/R_sh;     // shunt field current in A
+ I_a = I-I_sh'        // armature current 
+ E_b = V_t - R_a*I_a; // the back emf in V 
+ P_md = E_b*I_a;      // mechanical power developed in W 
+ 
+ // display the result 
+disp("Example 5.2 solution");
+printf("\n The back emf is \n E_b = %.1f V \n\n",E_b ); 
+printf(" \n Mechanical power developed is \n P_md = %.1f W" ,P_md );
+printf(" \n NOTE : error in calculation they has taken I_a=18.13, instead of I_a=18.75");
-- 
cgit