What is the primary cause of surface tension in fluids?
A Gravitational force
B Cohesive forces
C Adhesive forces
D Viscous forces
What is the primary purpose of a hydrometer?
A Measure fluid velocity
B Measure fluid pressure
C Measure fluid density
D Measure fluid viscosity
What is the primary assumption in the continuity equation?
A Turbulent flow
B Steady flow
C Compressible flow
D Viscous flow
What is the primary cause of laminar flow?
A Low Reynolds number
B High Reynolds number
C High viscosity
D Low viscosity
What is the primary purpose of a rotameter?
A Measure pressure
B Measure velocity
C Measure flow rate
D Measure viscosity
What is the primary cause of turbulent flow?
A Low Reynolds number
B High Reynolds number
C Low viscosity
D High pressure
What is the primary purpose of a barometer?
A Measure atmospheric pressure
B Measure fluid velocity
C Measure fluid density
D Measure fluid viscosity
What is the primary cause of drag in high-speed flows?
A Viscous drag
B Surface tension
C Pressure drag
D Gravity
What is the primary purpose of a flow net?
A Measure flow rate
B Visualize flow patterns
C Calculate pressure
D Determine viscosity
What is the primary cause of energy loss in pipe flow?
A Friction
B Gravity
C Surface tension
D Viscosity
What is the primary purpose of a weir?
A Increase pressure
B Reduce velocity
C Store fluid
D Measure flow rate
What is the primary cause of compressible flow?
A High velocity
B High pressure
C Low pressure
D Low velocity
What is the primary purpose of a draft tube in a turbine?
A Measure flow rate
B Reduce pressure
C Increase efficiency
D Increase velocity
What is the primary cause of flow separation?
A Increase in velocity
B Adverse pressure gradient
C Decrease in viscosity
D Increase in temperature
What is the primary purpose of CFD (Computational Fluid Dynamics)?
A Simulate fluid flow
B Measure fluid pressure
C Calculate fluid density
D Determine fluid viscosity