
GW 30 SPRING 2025
Authored by Mike Lapray
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University
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23 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Air expands to fill a greater space as _____.
relative humidity increases
pressure drops
temperature rises
All of the above.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Return air inlets should be placed _____.
always near the ceiling
always along the floor
the minimum distance from the supply duct outlets
the maximum distance from the supply duct outlets
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To bring fresh air into a building’s conditioned space and minimize how much it might affect indoor temperature, use a(n) _____.
barometric damper
HRV or ERV
motorized damper
soffit vent and ridge vent
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Negative pressure in a building _____.
enhances the efficiency of exhaust fans
helps keep out airborne pollen
makes a fuel-fired furnace more efficient
tends to bring in outside contaminants
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A system in cooling mode should provide at least _____ cfm of air per person.
5
15
50
100
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How long would an air-conditioning system take to complete one air exchange in a 12,000 ft3 space occupied by 25 people?
0.0315 min.
1.88 min.
32 min.
64 min.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which shape of ducts provides the least resistance to airflow?
Hexagonal
Square
Rectangular
Round
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