What is drag force in fluid mechanics?
A Fluid resistance
B Fluid speed
C Pressure drop
D Fluid density
What does lift in fluid dynamics refer to?
A Fluid pressure
B Force pulling up
C Fluid velocity
D Resistance to motion
What does dimensional analysis help determine?
A Flow velocity
B Pressure loss
C Fluid behavior
D Viscosity
What is similitude in fluid mechanics?
A Similar flow properties
B Flow instability
C Repeated motion
D Equal fluid density
What causes cavitation in pumps?
A Low pressure
B High temperature
C High viscosity
D High velocity
What does compressible flow refer to?
A Low-pressure flow
B Density change flow
C High-speed flow
D Steady flow
What is hydraulic machinery used for?
A Pressure control
B Energy conversion
C Fluid resistance
D Flow measurement
What happens in a laminar flow?
A Irregular motion
B Smooth layers
C Rapid mixing
D Fluid separation
What does the drag coefficient depend on?
A Fluid velocity
B Object shape
C Fluid temperature
D Fluid density
What does a flow over body theory describe?
A Pressure change
B Resistance force
C Boundary layer behavior
D Energy conversion
What is the main function of a turbine?
A Increase pressure
B Convert energy
C Measure velocity
D Control flow
What is the effect of high viscosity on fluid flow?
A No effect
B Reduces flow rate
C Increases turbulence
D Increases velocity
What is the effect of turbulence in fluid flow?
A Smooth layers
B Reduced pressure
C Chaotic movement
D Decreased viscosity
What is an orifice meter used for?
A Measure pressure
B Measure flow rate
C Measure velocity
D Measure density
What is the key characteristic of a turbulent flow?
A Chaotic, irregular motion
B High viscosity
C Smooth, ordered movement
D Low velocity