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

---
 431/CH4/EX4.24/EX4_24.sce       | 29 +++++++++++++++++++++++++++++
 431/CH4/EX4.24/resultEX4_24.txt |  5 +++++
 2 files changed, 34 insertions(+)
 create mode 100755 431/CH4/EX4.24/EX4_24.sce
 create mode 100755 431/CH4/EX4.24/resultEX4_24.txt

(limited to '431/CH4/EX4.24')

diff --git a/431/CH4/EX4.24/EX4_24.sce b/431/CH4/EX4.24/EX4_24.sce
new file mode 100755
index 000000000..8de1acae6
--- /dev/null
+++ b/431/CH4/EX4.24/EX4_24.sce
@@ -0,0 +1,29 @@
+//Calculate speed of motor and maximium torque
+//Chapter 4
+//Example 4.24
+//page 321
+clear;
+clc; 
+disp("Example 4.24")
+V=400;                //supply voltage in volts
+f=50;                    //frequency in hertz
+P=6;                  //number of poles
+ph=3;                  //three phase supply
+R2=0.03;                //rotor resistance in ohms
+X20=0.4;                 //rptor reactance in ohms
+Nr=960;                //full load speed in rpm
+Ns=(120*f)/P;
+printf("synchronous speed=%drpm",Ns)
+S=(Ns-Nr)/Ns;            //corresponding slip
+//maximium torque Tm occurs at S=(R2/X20)
+//we get Tm=k/(2*X20)
+a=R2/X20;
+//r=Tm/T
+r=(a^2+S^2)/(2*a*S);
+Sm=(R2/X20);
+printf("\nSlip at maximium torque,Sm=%f",Sm);
+//corresponding speed
+Nr2=Ns*(1-Sm);
+printf("\nRotor speed at maximium torque=%drpm",Nr2)
+
+
diff --git a/431/CH4/EX4.24/resultEX4_24.txt b/431/CH4/EX4.24/resultEX4_24.txt
new file mode 100755
index 000000000..f5e1f4dca
--- /dev/null
+++ b/431/CH4/EX4.24/resultEX4_24.txt
@@ -0,0 +1,5 @@
+  
+ Example 4.24   
+synchronous speed=1000rpm
+Slip at maximium torque,Sm=0.075000
+Rotor speed at maximium torque=925rpm 
\ No newline at end of file
-- 
cgit