2 files changed, 24 insertions, 0 deletions
diff --git a/147/CH14/EX14.21/Example14_21.sce b/147/CH14/EX14.21/Example14_21.sce
new file mode 100644
index 000000000..cbf75c692
--- /dev/null
+++ b/147/CH14/EX14.21/Example14_21.sce
@@ -0,0 +1,21 @@
+close();
+clear;
+clc;
+//frequency of induction motor 'f', number of poles 'p'
+f1 = 60; //Hz
+p = 4;
+P = 120*1000; //W
+f2 = 3; //Hz
+s = f2/f1;
+//synchronous speed 'ns'
+ns = 120*f1/p; //rpm
+
+//(a)
+//rotor speed 'n'
+n = (1-s)*ns; //rpm
+mprintf("(a) The rotor speed, n = %d rpm\n\n",round(n));
+
+//(b)
+//rotor copper losses 'Pc'
+Pc = s*P; //W
+mprintf("(b) The rotor copper losses, Pc = %d kW",Pc/1000);
+\ No newline at end of file
diff --git a/147/CH14/EX14.21/Result14_21.txt b/147/CH14/EX14.21/Result14_21.txt
new file mode 100644
index 000000000..f56e68ded
--- /dev/null
+++ b/147/CH14/EX14.21/Result14_21.txt
@@ -0,0 +1,3 @@
+(a) The rotor speed, n = 1710 rpm
+
+(b) The rotor copper losses, Pc = 6 kW
+\ No newline at end of file