# Interview Questions on Fluid mechanics

- What is fluid mechanics and its applications?
- Explain the difference between laminar and turbulent flow.
- Describe the equation of continuity and its applications.
- Explain the principle of Bernoulli’s equation and its applications.
- What is hydraulic efficiency and what factors affect it?
- What is cavitation and how does it occur?
- How does the Reynolds number affect the flow regime of a fluid?
- What is meant by the term “dimensional analysis” in fluid mechanics?
- Describe the Navier-Stokes equation and its significance in fluid mechanics.
- What is the purpose of using a pitot tube in fluid flow measurement?
- Explain the concept of drag and lift forces in fluid mechanics.
- What is a hydraulic jump and how does it occur?
- What is the difference between steady and unsteady flow in fluid mechanics?
- What are the different types of fluid flow (e.g. forced flow, free flow, etc.)?
- What is the difference between incompressible and compressible fluid flow?
- What is fluid mechanics and what are its applications?
- What is the difference between a fluid and a solid?
- Explain the concept of fluid statics and its applications.
- Define and explain Bernoulli’s equation and its applications.
- What is the continuity equation and how is it derived?
- What are the types of fluid flow?
- Explain the principle of hydraulic machines.
- What are the dimensions of dynamic viscosity and kinematic viscosity?
- What is the Reynolds number and its significance in fluid mechanics?
- What is the difference between laminar and turbulent flow?
- Explain the concept of boundary layer theory.
- What is the difference between compressible and incompressible fluid flow?
- What is the principle of pump and turbine operation?
- What are the types of fluid-structure interaction and its importance in design?
- What is the difference between open channel flow and pipe flow?
- Define and explain the concept of pressure.
- What are the units of pressure?
- Explain the relationship between pressure and density.
- What is the pressure at a point in a fluid at rest?
- What is the equation of pressure in a fluid at rest?
- What is Pascal’s law and its applications?
- What is the concept of buoyancy and Archimedes’ principle?
- What is the equation for the force of buoyancy?
- What is the difference between subcritical and supercritical flow?
- What is the principle of a venturi meter?
- What is the difference between pressure head and velocity head?
- What is the principle of a pitot tube?
- What is the concept of drag and lift?
- What are the types of drag and lift forces?
- What is the difference between drag and lift coefficients?
- What is the difference between incompressible and compressible fluid flow?
- What is the Mach number and its significance in fluid mechanics?
- What is the difference between normal and oblique shock waves?
- What is the principle of a shock tube?
- What is the difference between choked flow and non-choked flow?
- What is the principle of a diffuser?
- What is the difference between axisymmetric and three-dimensional flow?
- What is the principle of a cyclone separator?
- What is the difference between turbulent and laminar flow?
- What is the Reynolds number and its significance in fluid mechanics?
- What is the principle of turbulence modeling?
- What are the types of turbulence models?
- What is the difference between Reynolds-averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES)?
- What is the difference between direct and iterative numerical methods?
- What is the principle of finite volume method (FVM)?
- What is the principle of finite element method (FEM)?
- What is the principle of boundary element method (BEM)?
- What is the principle of particle-based methods?
- What is the principle of mesh generation?
- What is the difference between structured and unstructured grids?
- What is the principle of grid adaptation?
- What is the principle of grid independency?
- What is the difference between steady and unsteady flow?
- What is the difference between laminar and turbulent flow?
- What is the principle of turbulence modeling?
- What is the difference between Reynolds-averaged Navier-Stokes (RANS) and Large Eddy Simulation (LES)?
- What is the principle of turbulence closure?
- What is the difference between isotropic and anisotropic turbulence?
- What is the principle of turbulence intensity?
- What is the principle of turbulence Reynolds stress?
- What is the principle of turbulence kinetic energy?
- What is the difference between turbulence generation and turbulence decay?
- What is the principle of turbulence production?
- What is the principle of turbulence dissipation?
- What is the principle of turbulence transfer?
- What is the principle of turbulence injection?
- What is the principle of turbulence mixing?
- What is the principle of turbulence diffusion?
- What is the principle of turbulence cascade?
- What is the difference between turbulence