What is the primary property of a fluid?
A Density
B Mass
C Ability to flow
D Rigidity
What is the SI unit of pressure?
A Pascal
B Watt
C Joule
D Newton
What does the term “fluid statics” study?
A Fluid density
B Pressure in fluids at rest
C Fluid motion
D Fluid viscosity
What does Bernoulli’s equation assume?
A Viscous flow
B Compressible flow
C Turbulent flow
D Incompressible flow
What is the role of the Navier-Stokes equation?
A To calculate fluid velocity
B To describe viscous fluid motion
C To calculate pressure differences
D To describe laminar flow
What is the typical characteristic of turbulent flow?
A Smooth and orderly
B Chaotic and irregular
C Chaotic and irregular
D Linear and predictable
What is the primary function of a flow nozzle?
A Measure flow rate
B Increase velocity
C Measure pressure
D Measure velocity
What is the primary cause of drag force?
A Fluid density
B Viscosity
C Pressure difference
D Fluid velocity
Which device is used to measure flow rate in open channels?
A Manometer
B Venturimeter
C Weir
D Flow nozzle
Which of the following is a typical assumption in the continuity equation?
A Steady flow
B Compressible flow
C High velocity
D High viscosity
What is the main principle behind an orifice meter?
A Pressure difference
B Fluid density
C Fluid velocity
D Viscosity
What does the Reynolds number predict?
A Fluid density
B Flow behavior
C Pressure loss
D Fluid temperature
Which flow condition is characteristic of low Reynolds numbers?
A Turbulent
B Laminar
C Compressible
D Steady
What is the primary cause of water hammer in pipelines?
A Sudden valve closure
B High flow velocity
C Increased temperature
D Decreased pressure
What is the purpose of a pump in a fluid system?
A Measure flow rate
B Increase fluid pressure
C Decrease velocity
D Store fluid