Author Question: Total pressure readings are taken on a duct system by A) Pointing the pressure sensing tube ... (Read 90 times)

jerry coleman · **on:** Jul 27, 2018

Total pressure readings are taken on a duct system by

A) Pointing the pressure sensing tube perpendicular to the air stream
B) Subtracting the velocity pressure reading from the static pressure reading
C) Pointing the pressure sensing tube into the airstream
D) Adding the static pressure reading and the total pressure reading

Question 2

You are using the static pressure drop method to check airflow. After making an adjustment to the system airflow, the static pressure drop across the coil increases. This indicates that

A) The airflow has decreased
B) The airflow has increased
C) Static pressure drop is not a reliable way to check system airflow
D) The evaporator coil became clogged during the adjustment period