Water Turbine: The water turbine is used to convert energy from one form to another. When the water falls on the buckets it helps to rotate the turbine. When water falls it has kinetic energy, so the kinetic energy is converted into potential energy to drive the turbine. The turbine is connected to the generator. The energy produced by the turbine is mechanical, so the generator converts the mechanical energy into electrical energy. There are two types of turbines Impulse Turbine Reaction Turbine Impulse Turbine: In this type of turbine the speed of the water has been changed. The impulse turbine obeys Newton's Second Law "for every action there is an equal and opposite reaction". We convert potential energy into kinetic energy before hitting the turbine. The impulse turbine is used for high altitudes. The height must be greater than 300 meters before hitting the turbine blades. Reaction Turbine: In this turbine the water pressure changes the movement of the blades and turbines in the forward direction. When the water hits the blades and rotates the turbine, the water loses its power. Due to the rotation the energy of the turbines is generated with the generator. For best performance, the turbine must be immersed in water. When water moves through its wings, mechanical energy is generated. The reaction turbine is also used for low and medium heads. At low drops the water falls from 30 metres, while at medium drops it falls from 300 metres. Types of impulse and reaction turbines discussed below. The types of impulse turbines are given below. The types of impulse turbines are given below. Turgo Turbine Pelton Turbine Types of Cross Flow Turbines ...... center of paper ...... Turbine selection depends on several factors; one of the most important things is water pressure. The second is to choose the type of turbine based on the available pressure, which of them (impulse or reaction turbine) to select and which to discard to obtain maximum benefit and better performance. Below are some necessary calculations 1 liter = 1000 mlV (volume)= 1000ml d(density)= m(mass)/v(volume)D(density)=1090 g/1000ml=1.09 g/mlPower in flowL' water in the stream has a certain power. Which can be calculated with this formula. P=ῃ.pghqP is the power measured in watts ῃ efficiency of the turbine p is the density of the water in kg/m^3 g is the acceleration due to gravity h is the head in meters we can calculate the power of Stream= 0 .60*1090 kg/m^3*9.81 m/s^2*0.012 m^3/s*1.524 mp=117.3 watts