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+//Fluid Systems - By Shiv Kumar
+//Chapter 5- Francis Turbine
+//Example 5.10
+//To Determine   (i) The Guide Blade Angle    (ii) The Wheel Vane Angle at Inlet    (iii) Diameter of Wheel at inlet      (iv)Width of Wheel at Inlet
+
+      clc
+      clear
+
+//Given Data:-
+      //Data Required
+       rho=1000;     //Density of water, Kg/m^3
+       g=9.81;          //Acceleration due to gravity, m/s^2
+
+           eta_o=75/100;       //Overall Efficiency
+           P=148.25;         //Power Produced, kW
+           H=7.62;        // Working Head,  m
+           ui=0.26*sqrt(2*g*H);       //Peripheral Velocity at Inlet, m/s
+           Vfi=0.96*sqrt(2*g*H);       //Velocity of Flow at Inlet, m/s
+           N=150;          //Speed, rpm
+           H_loss=22;       //Percentage of Hydraulic Losses in the Turbine (of Available Energy)
+    //As Discharge is Radial,
+            alpha_o=90;   //Degrees          //Vfo=Vo
+            Vwo=0;
+
+//Computations:-
+        Do=ui*60/(%pi*N);      //m
+        Q=P*1000/(rho*g*H*eta_o);       //m^3/s
+        bo=Q/(%pi*Do*Vfi);    //m   
+
+    //By Energy Balance Equation,
+        Vwi=(g*H-(H_loss/100)*g*H)/ui;       //m/s
+         
+            alpha_i=atand(Vfi/Vwi);     //degrees
+            beta_i=atand(Vfi/(Vwi-ui));       //degrees
+
+
+//Results:-
+      printf(" (i)The Guide Blade Angle , alpha_i=%.2f Degrees\n",alpha_i)
+      printf(" (ii) The Wheel Vane Angle at Inlet, beta_i =%.2f Degrees\n", beta_i )        //The Answer Vary due to Round off Error
+      printf(" (iii) Diameter of Wheel at Inlet, Do =%.4f m\n",Do)        //The Answer Vary due to Round off Error
+      printf(" (iv)Width of Wheel at Inlet , bo =%.4f m\n",bo)        //The Answer Vary due to Round off Error
+
+
+