1 files changed, 74 insertions, 0 deletions
diff --git a/1092/CH14/EX14.4/Example14_4.sce b/1092/CH14/EX14.4/Example14_4.sce
new file mode 100755
index 000000000..576eb39d3
--- /dev/null
+++ b/1092/CH14/EX14.4/Example14_4.sce
@@ -0,0 +1,74 @@
+// Electric Machinery and Transformers
+// Irving L kosow 
+// Prentice Hall of India
+// 2nd editiom
+
+// Chapter 14: TRANSFORMERS
+// Example 14-4
+
+clear; clc; close; // Clear the work space and console.
+
+// Given data
+N_1 = 600 ; // Number of primary turns 
+N_2 = 150 ; // Some number of secondary turns 
+N_3 = 300 ; // Some number of secondary turns 
+Z_2 = 30 ; // Resistive load in ohm across N_2
+Z_3 = 15 ; // Resistive load in ohm across N_3
+R_2 = 30 ;
+R_3 = 15 ;
+V_p = 16 ; // Primary applied voltage in volt
+cos_theta = 1 ; // unity PF
+
+// Calculations
+// case a
+Z_2_prime = Z_2 * (N_1/N_2)^2 ; // Impedance reflected to the primary by load Z_2 in ohm
+
+// case b
+Z_3_prime = Z_3 * (N_1/N_3)^2 ; // Impedance reflected to the primary by load Z_3 in ohm
+
+// case c
+// Total impedance reflected to the primary in ohm
+Z_1 = (Z_2_prime * Z_3_prime) / (Z_2_prime + Z_3_prime) ; 
+
+// case d
+I_1 = V_p / Z_1 ; // Total current drawn from the supply in A
+
+// case e
+P_t = V_p * I_1 * cos_theta ; // Total power in W drwan from the supply at unity PF
+
+// case f
+V_2 = V_p * (N_2/N_1) ; // Voltage across Z_2 in volt
+P_2 = (V_2)^2 / R_2 ; // Power dissipated in load Z_2 in W
+
+// case g
+V_3 = V_p * (N_3/N_1) ; // Voltage across Z_3 in volt
+P_3 = (V_3)^2 / R_3 ; // Power dissipated in load Z_3 in W
+
+// case h
+P_total = P_2 + P_3 ; // Total power dissipated in both loads in W
+
+// Display the results
+disp("Example 14-4 Solution : ");
+
+printf(" \n a: Impedance reflected to the primary by load Z_2 : ");
+printf(" \n    Z_2 = %d ohm \n ",Z_2_prime );
+
+printf(" \n b: Impedance reflected to the primary by load Z_3 : ");
+printf(" \n    Z_3 = %d ohm \n ",Z_3_prime );
+
+printf(" \n c: Total impedance reflected to the primary : ");
+printf(" \n    Z_1 = %.1f ohm \n ",Z_1 );
+
+printf(" \n d: Total current drawn from the supply : ");
+printf(" \n    I_1 = %.1f A \n ",I_1 );
+
+printf(" \n e: Total power drawn from the supply at unity PF : ");
+printf(" \n    P_t = %.1f W \n ",P_t );
+
+printf(" \n f: Voltage across Z_2 in volt :\n    V_2 = %d V \n ",V_2 );
+printf(" \n    Power dissipated in load Z_2 :\n    P_2 = %.2f W \n",P_2 );
+
+printf(" \n g: Voltage across Z_3 in volt :\n    V_3 = %d V \n ",V_3 );
+printf(" \n    Power dissipated in load Z_3 :\n    P_3 = %f W \n",P_3 );
+
+printf(" \n h: Total power dissipated in both loads :\n    P_t = %.1f W",P_total);