FLUID MECHANICS 9.1 Introduction 9.2 Properties of Fluids 9.2.1 Density 9.2.2 Viscosity 9.2.3 Newtonian and Non-Newtonian Fluids 9.2.4 Surface Tension 9.2.5 Capillarity 9.2.6 Pressure Variation with Depth 9.3 Bernoulli’s Equation 9.4 Types of Flow HYDRAULIC MACHINES 9.5 Introduction 9.6 Hydraulic Turbines 9.6.1 Classification of Hydraulic Turbines 9.7 Terminology Used in Turbine 9.8 Pelton Turbine 9.8.1 Main Components of Pelton Turbine 9.8.2 Selection of Speed of Pelton Turbine 9.8.3 Velocity Triangle for Pelton Turbine 9.9 Francis Turbine 9.9.1 Main Components of Francis Turbine 9.9.2 Different Shapes of Draft Tubes 9.10 Kaplan Turbine 9.10.1 Velocity Triangle for Kaplan Turbine 9.11 Governing of Turbines 9.12 Pumps 9.13 Centrifugal Pump 9.13.1 Main Components of Centrifugal Pump 9.13.2 Velocity Triangle for Centrifugal Pump 9.13.3 Various Heads and Efficiencies of Centrifugal Pumps 9.13.4 Some Important Points Related to Centrifugal Pump 9.14 Reciprocating Pump 9.14.1 Air Vessels 9.15 Gear Pump 9.16 Vane Pump 9.17 Lobe Pump 9.18 Screw Pump 9.18.1 Two-screw, Low-pitch, Screw Pump 9.18.2 Three-screw, High-pitch, Screw Pump Points to RememberImportant Formulae Multiple-choice Questions Review Questions Exercise Problems