CM 3200 HVAC EXAM QUESTIONS WITH ACCURATE
SOLUTIONS
1) Your installing 30 LED lighting fixtures in a storage room and each fixture consumes
15 watts. Assume the fixtures are spread evenly throughout the 1,000sf room. Find
the heat gained from these fixtures within the space.
A) 102.3 Btuh
B) 51.15 Btuh
C) 660 Btuh
D) 450 Btuh
E) 1,535 Btuh
F) 2,152 Btuh -- Correct Answer ✔✔ E. 1,535 Btuh
2) An owner of an aging office building is thinking about making $50,000 in HVAC
controls upgrades to increase efficiency. This upgrade would also require him to pay
for a $500 per year maintenance agreement with the controls company. What would
be the owner's payback period in years for making the improvements if he was to
see the promised $3,000 per year in reduced energy costs?
A) 16.5 years
B) 20 years
C) 16.67 years
D) 100 years
, E) 14 years -- Correct Answer ✔✔ B. 20 years
3) Find the Seasonal Energy Efficiency Ratio (SEER) on an A/C unit that removes
215,000,000 Btu's and uses 15,000kWh of electricity during the peak season.
A) 14 Wh
B) 14%
C) 14,333 Wh
D) 14 Btu/Wh
E) 14,333 Btu/Wh -- Correct Answer ✔✔ D. 14 Btu/Wh
4) Occurs when an HVAC system has been oversized for the loads facilitated in a
building -- Correct Answer ✔✔ Short cycle
5) Used in calculating the amount of outdoor air volume. Winter rates are typically 50%
larger than summer rates. -- Correct Answer ✔✔ Air change
6) Heating equipment that heats the air directly without using another medium. --
Correct Answer ✔✔ Furnace
7) The type of air filters that would be appropriate for hazardous particulate materials
-- Correct Answer ✔✔ HEPA
8) System that can provide heating or cooling by using a 4-way reversing value --
Correct Answer ✔✔ Heat pump
9) U = (1/Rt) -- Correct Answer ✔✔ Reciprocal of thermal resistance
10) Uses both a grille and damper to control air flow -- Correct Answer ✔✔ Register
SOLUTIONS
1) Your installing 30 LED lighting fixtures in a storage room and each fixture consumes
15 watts. Assume the fixtures are spread evenly throughout the 1,000sf room. Find
the heat gained from these fixtures within the space.
A) 102.3 Btuh
B) 51.15 Btuh
C) 660 Btuh
D) 450 Btuh
E) 1,535 Btuh
F) 2,152 Btuh -- Correct Answer ✔✔ E. 1,535 Btuh
2) An owner of an aging office building is thinking about making $50,000 in HVAC
controls upgrades to increase efficiency. This upgrade would also require him to pay
for a $500 per year maintenance agreement with the controls company. What would
be the owner's payback period in years for making the improvements if he was to
see the promised $3,000 per year in reduced energy costs?
A) 16.5 years
B) 20 years
C) 16.67 years
D) 100 years
, E) 14 years -- Correct Answer ✔✔ B. 20 years
3) Find the Seasonal Energy Efficiency Ratio (SEER) on an A/C unit that removes
215,000,000 Btu's and uses 15,000kWh of electricity during the peak season.
A) 14 Wh
B) 14%
C) 14,333 Wh
D) 14 Btu/Wh
E) 14,333 Btu/Wh -- Correct Answer ✔✔ D. 14 Btu/Wh
4) Occurs when an HVAC system has been oversized for the loads facilitated in a
building -- Correct Answer ✔✔ Short cycle
5) Used in calculating the amount of outdoor air volume. Winter rates are typically 50%
larger than summer rates. -- Correct Answer ✔✔ Air change
6) Heating equipment that heats the air directly without using another medium. --
Correct Answer ✔✔ Furnace
7) The type of air filters that would be appropriate for hazardous particulate materials
-- Correct Answer ✔✔ HEPA
8) System that can provide heating or cooling by using a 4-way reversing value --
Correct Answer ✔✔ Heat pump
9) U = (1/Rt) -- Correct Answer ✔✔ Reciprocal of thermal resistance
10) Uses both a grille and damper to control air flow -- Correct Answer ✔✔ Register
