Btuh - Study guides, Class notes & Summaries
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NATE Exam: Core Test Refresher Questions and Answers (Graded A)
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NATE Exam: Core Test Refresher Questions and Answers (Graded A) 
Calculate the air volume based upon these conditions: 
 
90,000 BTUH output Return air temperature: 70F 
Supply air temperature: 110F 
 
a.	1,158 CFM 
b.	1,500 CFM 
c.	1,800 CFM 
d.	2,083 CFM - ANSWER-d (2,083 CFM)
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G2 Exam Quiz Bank (2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A
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G2 Exam Quiz Bank (2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A 
 
 
Q: The STACK EFFECT in a water heater is usually caused by 
 
Answer: 
 Short draws of water from the heater 
 
 
Q: A 120v power supply for a residential electrical circuit is taken from the 
 
Answer: 
 - 
Load side of one branch circuit breaker and a neutral lug 
 
 
 
Q: The minimum allowable distance to be maintained from a 50,000 btuh water heater flue outlet gas regulator 
 
Answer: 
 3' 
...
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Gas Technician G2 License Test Questions and Answers 2024-2025 Verified 100%
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Gas Technician G2 License Test Questions and Answers Verified 100% 
An inline Ammeter is connected Ans- In series with the device being checked 
 
As the length of an Electrical run increases, it may be necessary to Ans- Increase the Wire Size 
 
Fuses serving motor circuits should be of Ans- Time Delay Type 
 
Millivolt wiring should be isolated from Line Voltage Wiring because Ans- The Line Voltage will induce a voltage into the Millivolt Wiring 
 
Which tool is used to determine if t...
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HVAC NATE Heat Pump Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A
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HVAC NATE Heat Pump Exam (Latest 2024/ 2025 Update) 100% Correct Questions and Verified Answers| Grade A 
 
Q: What is the absolute pressure at sea level if a gauge pressure is 35 psig? 
 
 
Answer: 
 49.7psia 
 
 
 
Q: 100,000 BTUH output furnace. 
Return air temp is 65F. 
Supply air is 135F. 
What is the CFM? 
 
 
Answer: 
 1323CFM 
 
 
 
Q: What is the best method of repair when a residential supply diffuser is noisy because of a loose vane? 
 
 
Answer: 
 Replace the diffuser. 
 
 
 
Q: When...
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Air Conditioning and Heat Pumps Questions And Answers With Latest Study Quiz
- Exam (elaborations) • 27 pages • 2024
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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 - Answer-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% - Answer-c (+15%) 
The maximum sensible cooling capacity of a heat pump shou...
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Gas Tech II Exam Questions and Answers 100% Pass
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Gas Tech II Exam Questions and Answers 100% Pass 
1) What is the minimum diameter of a pressure gauge needed to perform leak test on gas piping? 3" 
2) Amp meter can read what? Conductor magnetic field. 
3) What would be the primary voltage of a furnace? 120/1/60. 
4) What is the function of an intermittent pilot? Stay on during the main burner operation. 
5) What is the millivolts power output on a thermocouple closed circuit test? 10 to 15 millivolts. 
6) A pilot with a lazy yellow flame woul...
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NATE Exam: Air Conditioning and Heat Pumps || with Accurate Answers 100%.
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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 correct answers 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% correct answers c (+15%) 
 
The maximum sensible cooling capacit...
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HVAC CONTRACTOR EXAM QUESTIONS AND ANSWERS 100% PASS
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HVAC CONTRACTOR EXAM QUESTIONS 
AND ANSWERS 100% PASS 
An instrument that measures potential differences between 2 points in an electrical 
circuit is called? 
A. potentiometer 
B. thermistor 
C. ohmeter 
D. voltmeter - Correct Answer ️️ -voltmeter 
This device uses a thermal sensing bulb at the outlet of the evaporator to sense 
temperature and control superheat 
A. automatic expansion valve 
B. thermostatic expansion valve 
C. low side float 
D. schraeder valve - Correct Answer ️️ -the...
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OK HVAC JOURNEYMAN TEST EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+
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OK HVAC JOURNEYMAN TEST EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+ 
 
 
C- leaky suction valve 
A deep vacuum is an evacuation method in which a technician uses a vacuum pump (or the systems compressor) to pull a vacuum until no moisture or other vapor remains in the system. If the compressor is used for this procedure, but CANNOT produce a deep vacuum, which of the following would be the problem? 
A- bad TXV 
B- low refrigerant 
C- leaky suction valve 
D- leaky exhaus...
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Combo with NATE Heat Pump Exam and 1 other Questions And Answers
- Exam (elaborations) • 33 pages • 2024
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Combo with NATE Heat Pump Exam and 1 other Questions And Answers 
 
 
Charging a heat pump with refrigerant is best accomplished in the _______ mode. 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode - ANS B: Cooling mode 
 
Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump more efficient? 
 
 A: Heating mode 
 
 B: Cooling mode 
 
 C: Defrost mode 
 
 D: Emergency heating mode - ANS A: Heati...
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