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+// Display mode
+mode(0);
+// Display warning for floating point exception
+ieee(1);
+clear;
+clc;
+disp("Turbomachinery Design and Theory,Rama S. R. Gorla and Aijaz A. Khan, Chapter 3, Example 4")
+disp("Given Data")
+H = 505//Head in m
+P = 12900//Power in kW
+N = 425//Speed in rpm
+etao = 0.84//Efficiency
+g = 9.81//m/s2
+disp("Let Q be the discharge of the turbine")
+Q = P/(etao*g*H)
+disp("Velocity of jet C")
+Cv = 0.98;
+C = Cv * (2*g*H)^0.5
+disp("Tangential velocity of the wheel is given by ")
+U = 0.46*C
+disp("Diameter D")
+D = 60*U/(%pi*N)
+disp("Let d be the diameter of the nozzle. The discharge through the nozzle must be equal to the discharge of the turbine. Therefore")
+d = (Q*4/(%pi*C))^0.5