2 files changed, 44 insertions, 0 deletions
diff --git a/431/CH4/EX4.2/EX4_2.sce b/431/CH4/EX4.2/EX4_2.sce
new file mode 100755
index 000000000..039252d78
--- /dev/null
+++ b/431/CH4/EX4.2/EX4_2.sce
@@ -0,0 +1,30 @@
+//determining rotor running at high slip
+//Chapter 4
+//Example 4.2
+//page 288
+clear;
+clc;
+disp("example 4.2");
+f=50;   //frequency
+V=400; //voltage supply
+
+p=2;
+printf("when P=2, Syhchronous speed,Ns=%d \n",((120*f)/p));
+p=4;
+printf("when P=2, Syhchronous speed,Ns=%d \n",((120*f)/p));
+p=6;
+printf("when P=2, Syhchronous speed,Ns=%d \n",((120*f)/p));
+p=8;
+printf("when P=2, Syhchronous speed,Ns=%d \n",((120*f)/p));
+disp("for Nr to be 1440 , Ns will be 1500, thus p=4")
+Ns=1500;Nr1=1440;
+S1=((Ns-Nr1)/Ns)*100;
+printf("slip=%d\n",S1);
+disp("for Nr to be 940 , Ns will be 1000, thus p=6")
+Ns=1000;Nr2=940;
+S2=((Ns-Nr2)/Ns)*100;
+printf("slip=%d\n",S2);
+if S1>S2 then
+    disp("motor running at 1440 rpm is running at higher slip")
+elseif S2>S1
+    disp("motor running at 940 rpm is running at higher slip")
+\ No newline at end of file
diff --git a/431/CH4/EX4.2/resultEX4_2.txt b/431/CH4/EX4.2/resultEX4_2.txt
new file mode 100755
index 000000000..be975322a
--- /dev/null
+++ b/431/CH4/EX4.2/resultEX4_2.txt
@@ -0,0 +1,14 @@
+ example 4.2   
+when P=2, Syhchronous speed,Ns=3000 
+when P=2, Syhchronous speed,Ns=1500 
+when P=2, Syhchronous speed,Ns=1000 
+when P=2, Syhchronous speed,Ns=750 
+ 
+ for Nr to be 1440 , Ns will be 1500, thus p=4   
+slip=4
+ 
+ for Nr to be 940 , Ns will be 1000, thus p=6   
+slip=6
+ 
+ motor running at 940 rpm is running at higher slip   
+ 
+\ No newline at end of file