Explain the Purpose of the Supply Duct

Q2: The pressure in a duct system is

Q3: Friction due to air rubbing the walls

Q4: The forced-air system is different from a

Q5: Galvanized sheet metal comes in several different

Q6: If the equivalent length of a transition

Q8: A(n) _ can be connected to measure

Q9: A(n) _ºF temperature difference from the inside

Q10: The atmosphere exerts a pressure of _

Q11: If the velocity of air through an

Q12: Duct systems can be plenum, extended plenum,