Skip to content
WorkZen
Academy
Home
All Trades
My Progress
en
English
EN
Français
FR
Español
ES
Menu
Home
All Trades
My Progress
Search certifications...
en
English
EN
Français
FR
Español
ES
Academy
HVAC
NATE Air Distribution Service Specialty
Duct Cleaning Evaluation
Knowledge Check
Duct Cleaning Evaluation
Knowledge Check
Knowledge Check
1 / 10
Why does the log-Tchebycheff method place more measurement points near the duct wall than near the center during a Pitot tube traverse?
A
Air velocity near the wall is always the same regardless of duct size
B
Velocity changes rapidly near the wall due to friction, requiring more data points for accuracy
C
Wall-mounted sensors are easier to access than center-duct sensors
D
The Pitot tube can only reach the outer third of the duct diameter
Check Answer
Back to lessons
Next module: Zoning troubleshooting
Next module: