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+clear ;
+clc;
+// Example 27.3
+printf('Example 27.3\n\n');
+//page no. 845
+// Solution 
+
+// Given 
+p_plant = 20 ;// Power generated by plant-[MW]
+h = 25 ;// Height of water level - [m]
+V = 100 ;// Flow rate of water -[cubic metre/s]
+d_water = 1000 ;// Density of water - [ 1000 kg / cubic metre]
+g = 9.807 ;// Acceleration due to gravity-[m/square second]
+
+M_flow = V*d_water ;// Mass flow rate of water -[kg/s]
+del_PE = M_flow*g*h ;// Potential energy change of water per second -[W]
+eff = (p_plant*10^6) /(del_PE) ;// Efficiency of plant 
+
+printf(' Efficiency of plant is %.2f .\n',eff) ;
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