Q.4 (a) Write a short note on Kinetic energy correction factor. (b) What is similitude? Define Geometric, Kinematic and Dynamic similarity. (c) Discharge Q of a centrifugal pump can be assumed to be dependent on density of liquid p, viscosity of liquid u, pressure p, impeller diameter D and speed N in RPM. Using Buckingham -theorem, show that: Q=NDgH [ND' ND_ OR Q.4 (a) If the surface tension at air and water interface is 0.0735 N/m, what is the pressure difference between inside and outside of an air bobble of diameter 0.01 mm? (b) Write down difference between impulse and reaction Water turbines. (c) Explain components and constructional features of Francis Turbines with neat schematic diagrams.