Which of the following statements about the evaporator bypass dampers in a refrigeration system is true?
a. They decrease the resistance to the passage of air when they close
b. When the face damper is closed, the quantity of air passing over the evaporator coils is at a maximum
c. The quantity of air passing through the duct depends on the damper position
d. Multi-speed blowers cannot be used in combination with face and bypass dampers
e. Actuators are required to provide damper movement
Answer: E