1 files changed, 17 insertions, 0 deletions
diff --git a/3760/CH4/EX4.73/Ex4_73.sce b/3760/CH4/EX4.73/Ex4_73.sce
new file mode 100644
index 000000000..452c2217f
--- /dev/null
+++ b/3760/CH4/EX4.73/Ex4_73.sce
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+clc;
+// shaft power is given little bit more than actual value in question 
+w1=25;
+w2=9; // spring balance readings in kg
+d=19.5*10^-2; // outside pulley diameter
+t=0.5*10^-2; // belt thickness
+g=9.81; // acceleration due to gravity
+n=1500; // motor speed
+v=230; // applied voltage
+il=12.5; // line current
+Ts=(w1-w2)*((d/2)+(t/2))*g; 
+printf('Shaft torque is %f Nm\n',Ts);
+psh=(2*%pi*n*Ts)/60; 
+printf('Shaft power is %f W\n',psh);
+pi=v*il; // motor input
+nm=(psh/pi)*100;
+printf('Motor efficiency at rated load is %f percent',nm);