What does open channel flow refer to?
A Flow through pipes
B Flow in a stream
C Flow in tanks
D Flow under pressure
What does Reynolds number indicate?
A Pressure loss
B Flow type
C Flow speed
D Fluid density
What happens at high Reynolds numbers?
A Laminar flow
B Low viscosity
C Turbulent flow
D Compressible flow
What is the effect of viscosity on fluid flow?
A Increases turbulence
B Increases velocity
C No effect
D Decreases flow rate
What is an orifice used for in fluid mechanics?
A Measure flow rate
B Measure velocity
C Reduce pressure
D Increase velocity
What is the primary cause of energy loss in pipe flow?
A Viscosity
B Friction
C Gravity
D Pressure
What does the continuity equation assume for incompressible flow?
A Steady velocity
B Constant mass flow
C Variable density
D Increasing pressure
What does Bernoulli’s equation apply to?
A Compressible flow
B Viscous flow
C Turbulent flow
D Steady, incompressible flow
What is the main function of a pump in a fluid system?
A Measure flow rate
B Increase pressure
C Decrease velocity
D Increase density
What does the Navier-Stokes equation describe?
A Pressure distribution
B Viscous fluid motion
C Flow velocity
D Flow resistance
What is boundary layer separation?
A Flow stagnation
B Loss of velocity
C Flow detachment
D Pressure increase
What causes drag force on an object moving through a fluid?
A Velocity
B Pressure difference
C Surface area
D Fluid density
What does a weir measure in fluid systems?
A Flow velocity
B Flow rate
C Pressure
D Temperature
What is the primary function of a turbine in fluid systems?
A Increase velocity
B Decrease pressure
C Convert energy
D Measure flow rate
What happens during compressible flow?
A Constant pressure
B Fluid density changes
C Steady velocity
D High viscosity