Final answer:
The errors due to the venturi effect in the alternate source for static pressure used in the event the normal static ports become clogged are due to friction and turbulence.
Step-by-step explanation:
In the event that normal static ports become clogged, an alternate source for static pressure can be used to measure the pressure of a fluid using the venturi effect. However, there are some errors that can occur due to the venturi effect in this situation.
- Due to friction: As the fluid flows through the venturi tube, there will be friction between the fluid and the surface of the tube. This friction can cause a decrease in the calculated value of the fluid velocity and static pressure.
- Due to turbulence: When the fluid passes through the narrowest part of the venturi tube, it can create turbulence. This turbulence can affect the accuracy of the measured static pressure.
It is important to consider these errors and account for them when using an alternate source for static pressure measurement.