3 files changed, 50 insertions, 0 deletions
diff --git a/833/CH7/EX7.9/Ex7_9.sce b/833/CH7/EX7.9/Ex7_9.sce
new file mode 100755
index 000000000..b41e432ba
--- /dev/null
+++ b/833/CH7/EX7.9/Ex7_9.sce
@@ -0,0 +1,23 @@
+//Caption:Find the speed at which it will run as a motor
+//Exa:7.9
+clc;
+clear;
+close;
+P_g=110000//Power of generator(in watts)
+n=400//Speed of generator(in r.p.m)
+V=220//Voltage of busbars(in volts)
+P_m=10900//Power of motor(in watt)
+r_a=0.025//Armature resistance(in ohms)
+r_f=55//Field resistance(in ohms)
+v_b=1//Voltage drop at each brush(in volt)
+i_l=P_g/V
+i_f=V/r_f
+I_a=i_l+i_f
+V_a=I_a*r_a
+E=V+V_a+(2*v_b)
+I_1=P_m/V
+i_a=I_1-i_f
+v_a=i_a*r_a
+E_b=V-(i_a*r_a)-(2*v_b)
+N_m=(n*E_b)/E
+disp(N_m,'Speed at which generator will run as motor is(in r.p.m)=')
+\ No newline at end of file
diff --git a/833/CH7/EX7.9/Ex7_9.txt b/833/CH7/EX7.9/Ex7_9.txt
new file mode 100755
index 000000000..b41e432ba
--- /dev/null
+++ b/833/CH7/EX7.9/Ex7_9.txt
@@ -0,0 +1,23 @@
+//Caption:Find the speed at which it will run as a motor
+//Exa:7.9
+clc;
+clear;
+close;
+P_g=110000//Power of generator(in watts)
+n=400//Speed of generator(in r.p.m)
+V=220//Voltage of busbars(in volts)
+P_m=10900//Power of motor(in watt)
+r_a=0.025//Armature resistance(in ohms)
+r_f=55//Field resistance(in ohms)
+v_b=1//Voltage drop at each brush(in volt)
+i_l=P_g/V
+i_f=V/r_f
+I_a=i_l+i_f
+V_a=I_a*r_a
+E=V+V_a+(2*v_b)
+I_1=P_m/V
+i_a=I_1-i_f
+v_a=i_a*r_a
+E_b=V-(i_a*r_a)-(2*v_b)
+N_m=(n*E_b)/E
+disp(N_m,'Speed at which generator will run as motor is(in r.p.m)=')
+\ No newline at end of file
diff --git a/833/CH7/EX7.9/Result7_9.txt b/833/CH7/EX7.9/Result7_9.txt
new file mode 100755
index 000000000..24f76682d
--- /dev/null
+++ b/833/CH7/EX7.9/Result7_9.txt
@@ -0,0 +1,4 @@
+Speed at which generator will run as motor is(in r.p.m)=   
+ 
+    369.7551  
+ 
+\ No newline at end of file