Water Turbine: Water turbine is used to convert energy from one form to another. When water falls on the buckets, it helps turn the turbine. When water falls, it has kinetic energy, so kinetic energy is converted into potential energy to operate the turbine. The turbine is connected to the generator. The energy produced by the turbine is mechanical, the generator therefore converts 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, water pressure changes the forward movement of the blades and turbines. When water hits the blades and spins the turbine, the water loses its power. Due to the rotation of the turbines energy is generated with a generator. For best performance, the impeller should be immersed in water. As water moves through its wings, mechanical energy is generated. Reaction turbine is also used for low and medium head. In low fall waterfalls 30 meters, while in medium falls it falls 300 meters. The types of impulse and reaction turbines are 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 ...... middle of paper ...... turbine selection depends on different things; 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 of them to reject to get maximum benefits and better performance . Some necessary calculations are given below1 liter = 1000 mlV. (volume)= 1000 ml d(density)= m(mass)/v(volume)D(density)=1090 g/1000 ml=1.09 g/mlPower in the streamThe water in the stream has a certain power. Which can be calculated by this formula.P=ῃ.pghqP is the power measured in watts ῃ the efficiency of the turbine p is the density of water in kg/m^3 g is the acceleration due to gravity h is the height in meter, we can calculate the power of Streamp= 0.60*1090 kg/m^3*9.81 m/s^2*0.012 m^3/s*1.524 MP=117.3 watts