Copyright Goodheart-Willcox Co., Inc. 114
________7. Which of the following duct system
elements smoothly directs air from a
primary or secondary trunk line to a
branch runout?
A. Elbow
B. Scoop
C. Turning vane
D. Transition
________8. Dashed lines and parentheses are
commonly used to identify ______.
A. duct sections to be insulated
B. existing duct sections to be
removed
C. existing duct sections to remain in
place
D. duct sections hidden from view
________9. All of the following are industry
organizations that create standards
for the safe and proper installation of
HVACR systems except ______.
A. NFPA
B. USAC
C. ASHRAE
D. ACCA
________10. The two duct fi ttings connected to the
air handler are the ______.
A. return plenum and the supply plenum
B. return transition and the supply
plenum
C. return plenum and the supply
transition
D. return transition and the supply
transition
Apply and Analyze
Refer to the following image for questions 1 and 2.
TF
________1. Which of the following drawings best represents the elevation view of the above
duct run?
A.
B.
C.
D.
24
x
18
24
x
14
18
x
24
14
x
24
18
x
24
14
x
24
24
x
18
24
x
14
24
x
18
24
x
14