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NATE Exam: Air Conditioning and Heat Pumps Questions and Answers | Latest Update $13.49   Add to cart

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NATE Exam: Air Conditioning and Heat Pumps Questions and Answers | Latest Update

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Which of the following factors affects a customer's level of comfort? a. Air movement b. Humidity c. Temperature d. All of the above d (All of the above: air movement, humidity, temperature) A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible ca...

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  • September 27, 2024
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2024/ 2025 | © copyright | This work may not be copied for profit gain Excel!

NATE Exam: Air Conditioning and Heat
Pumps Questions and Answers | Latest
Update
Which of the following factors affects a customer's level of comfort?




a. Air movement


b. Humidity


c. Temperature


d. All of the above


✓ d (All of the above: air movement, humidity, temperature)




A cooling load calculation estimates the sensible heat gain of a structure. The maximum

sensible capacity of a cooling-only system should be within ____% of this calculated value.




a. ±10%


b. +10%


c. +15%


d. +30%


✓ c (+15%)


1 | P a g e | G r a d e A + | 2 0 0 2 5

,2024/ 2025 | © copyright | This work may not be copied for profit gain Excel!


The maximum sensible cooling capacity of a heat pump should be within ____% of the

calculated sensible heat gain of a structure with a large heating load.




a. ±10%


b. +15%


c. -25%


d. +25%


✓ d (+25%)




The combined output of a heat pump and its auxiliary heat should not exceed the calculated

heat loss of a home by more than ____%.




a. 10%


b. 15%


c. 20%


d. 25%


✓ b (15%)




1 | P a g e | G r a d e A + | 2 0 0 2 5

,2024/ 2025 | © copyright | This work may not be copied for profit gain Excel!
What amount of auxiliary electric heat is needed when the output of a heat pump on a

design day equals 18,800 Btuh and the heat loss of a home is 29,700 Btuh?




a. 2.1 kWh


b. 3.2 kWh


c. 5.0 kWh


d. 10.9 kWh




Note: 3,413 Btu/kW


✓ b (3.2 kWh)




The three processes that transfer heat energy are conduction, convection, and ____.




a. concentration


b. radiation


c. refraction


d. static pressure


✓ b (radiation)




1 | P a g e | G r a d e A + | 2 0 0 2 5

, 2024/ 2025 | © copyright | This work may not be copied for profit gain Excel!
Heat transfer that occurs when substances of different temperatures are in contact with

each other is called ____.




a. concentration


b. conduction


c. convection


d. radiation


✓ b (conduction)




What effect does raising the pressure in a sealed system have on refrigerant?




a. It becomes more difficult to subcool the liquid refrigerant


b. It becomes more difficult to superheat the refrigerant vapor


c. The refrigerant's boiling point decreases


d. The refrigerant's boiling point increases


✓ d (The refrigerant's boiling point increases)




What is the primary danger to people near an accidental refrigerant release or spill?




1 | P a g e | G r a d e A + | 2 0 0 2 5

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