What is the main characteristic of fluids?
A Flow ability
B Resistance
C Rigidity
D Hardness
What does Bernoulli’s equation relate to?
A Mass conservation
B Energy conservation
C Flow velocity
D Viscosity
Which device measures fluid velocity?
A Orifice meter
B Weir
C Pitot tube
D Manometer
What is the formula for Reynolds number?
A ρVD/μ
B VD/ρ
C μVρ
D μVD/ρ
What does the continuity equation assume?
A Compressible flow
B Steady flow
C Laminar flow
D Variable pressure
Which type of flow occurs at low Reynolds numbers?
A Turbulent flow
B Laminar flow
C Compressible flow
D Steady flow
What is a weir used for?
A Measure flow rate
B Decrease velocity
C Increase pressure
D Store fluid
What is drag force caused by?
A Fluid viscosity
B Pressure difference
C High temperature
D All of the above
What is cavitation?
A Flow separation
B Increased viscosity
C Vapor bubble formation
D Fluid boiling
What does a Venturimeter measure?
A Viscosity
B Pressure
C Flow rate
D Velocity
What type of flow occurs at high Reynolds numbers?
A Turbulent flow
B Laminar flow
C Steady flow
D Compressible flow
What does the Navier-Stokes equation describe?
A Viscous fluid motion
B Pressure distribution
C Flow resistance
D Flow rate
What does the term “boundary layer” refer to?
A Pressure drop
B Flow instability
C Flow near a surface
D Turbulent zone
What is the main purpose of dimensional analysis?
A Measure fluid density
B Calculate flow velocity
C Determine viscosity
D Simplify fluid problems
What is the primary cause of water hammer?
A Increases velocity
B Low pressure
C Sudden velocity change
D Fluid density