The venturi tube can be used to measure ( )
A: Point velocity
B: Point pressure
C: Average velocity across section
D: Flow rate
A: Point velocity
B: Point pressure
C: Average velocity across section
D: Flow rate
举一反三
- The main physical properties of the fluid are （ ） A: density B: compressibility C: viscosity D: velocity E: flow rate
- The discount rate will vary ( ) A: across cultures at a point in time B: across cultures over time C: within a culture at a point in time . D: within a culture over time.
- If a flow is unsteady, its ____ may change with time at a given location. ( ) A: Velocity B: Temperature C: Density D: Pressure E: All of the above
- Average velocity is defined by the equation v=s/t,____ v is the average velocity, s is the distance traveled, and t is the elapsed time.
- Petrol<br/>has a low boiling point; if a little is poured into the hand it soon<br/>changes into ______. A: veil B: vapour C: vacuum D: velocity