One ton of refrigeration Study guides, Class notes & Summaries
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C20 (HVAC) Hvac systems Questions & 100% Verified Answers | Latest Update | Already Graded A+
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Upflow Furnace: 
: Is used to describe furnaces that stand upright and blow air upward. These 
systems are designed for first floor installation with attic ductwork or basement 
installation with ductwork positioned below the first floor. 
Low boy furnace: 
: Similar to Upflow except the furnace is shorter so it can fit in basement with low 
ceilings. 
Down flow furnace: 
: Furnace goes into the attic and pushes air down through vents. Ductwork may be 
in a concrete slab floor or a crawl spa...
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HVAC competency Exams Questions And Verified Answers
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If a natural gas piping system fails a pressure test, the technician must re-pressurize the system and 
check for leaks with? - Answer-soap bubbles 
a pressure relief valve is installed to? - Answer-avoid exceeding the system limits 
In a refrigeration system, what must be installed at 10' intervals on the suction line if the compressor 
is above the evaporator? - Answer-Trap 
What occurs if a 3 amp load is connected to the secondary winding of a 24 volt, 40 V.A. transformer? 
- Answer-Transfor...
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HVAC EXAM QUESTIONS AND ANSWERS 100% SOLVED GRADED A+ LATEST UPDATE 2024
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HVAC EXAM QUESTIONS AND ANSWERS 100% SOLVED GRADED A+ LATEST UPDATE 2024 
Heat Transfer 
Moves from one substance to another as well as between molecules of a substance, temperature is the driving force 
Temperature 
The level of heat or heat intensity, measured with thermometers 
Heat 
Is the motion of molecules, and travels from a warm substance to a cold substance 
Conduction 
Energy travelling from one molecule to another, involves direct contact 
Radiation 
Passes through air and heats the ...
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RETA CARO Chapter 1 Exam Questions With Verified Solutions
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RETA CARO Chapter 1 Exam Questions With Verified Solutions 
Purpose of a Refrigeration System 
Achieve or maintain proper temperatures in a refrigeration process used for cooling/freezing applications 
 
 
Ton of Refrigeration 
Rate BTUs transfer per unit time 
288,000 BTUs/24 Hours 
12,000 BTUs/12 Hours 
200 BTUs/1 Minute 
 
rate of refrigeration or cooling 
 
 
Pressure 
Force per unit area. 
 
 
PSIA 
Absolute pressure; measures pressure from zero pressure 
 
 
PSIG 
Gauge pressure, uses atmo...
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Q-01 FDNY Exam Questions With Correct Answers Latest Updated 2023/2024 (Verified )
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Q-01 FDNY Exam Questions With Correct Answers Latest Updated 2023/2024 (Verified ). Butterfly valve: where can it be used? - Correct Answer-Can be used on the inlet and 
outlet of a water pump 
What electrical motor protection device automatically resets itself? - Correct AnswerThe thermal protector 
746 watts equals how many kilowatt hours? - Correct Answer-.746 kilowatt hours 
What position is the liquid line service valve normally in? - Correct Answer-Back-seated 
In an operating evaporator, ...
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EPA 608 Type 3 actual exam 2024 with 100% correct answers(download to pass)
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On low pressure chillers, moisture typically enters the refrigerant system through 
air leaks from areas with gaskets or fittings 
 
 
 
The maximum test pressure for leak testing a low pressure centrifugal is: 
10 psig 
 
 
 
Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller 
... 
 
 
 
A hydrostatic tube test kit is used to: 
determine if a tube leaks 
 
 
 
Commercial and industrial process refrigeration systems must be repaired when the leak rate...
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HVAC TEST QUESTIONS AND ANSWERS | VERIFIED
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Two locations where a cold air return should be installed - open area of a wall and low to the 
ground 
Which of the following is the law of thermodynamics? - heat moves toward a place with lower 
intensity 
Sensible heat describes - how hot something feels 
Latent heat is measured in - british thermal units 
What is the amount of heat energy required to evaporate 1 pound of water? - 970 btu 
In an air conditioning system and refrigeration system, what occurs in the evaporator? - the 
refrigeran...
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Refrigeration license review Exam Questions With Verified And Updated Solutions.
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Refrigeration license review Exam 
Questions With Verified And Updated 
Solutions. 
At the condenser refrigerant enters as - answerhigh pressure gas and leaves as high pressure 
liquid 
If you were running three compressors, - answerhighly superheated vapor describes the state 
of the refrigerant leaving the third compressor 
the state of refrigerant as it leaves the compressor is (blank) and as it leaves the condenser is 
(blank) - answercompressor-super heated vapor 
condenser- warm sub-cooled...
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EPA 608 Type 3 exam with 100% Complete Solutions
- Exam (elaborations) • 16 pages • 2024
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EPA 608 Type 3 exam with 100% Complete Solutions. On low pressure chillers, moisture typically enters the refrigerant system through 
air leaks from areas with gaskets or fittings 
The maximum test pressure for leak testing a low pressure centrifugal is: 
10 psig 
Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on 
CFC-11 chiller 
... 
A hydrostatic tube test kit is used to: 
determine if a tube leaks 
Commercial and industrial process refrigeration systems must be ...
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BOMA-HVAC EXAM STUDY GUIDE
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laminar flow - Answer-- A streamline or viscous flow. 
- layers of water flowing over one another at different speeds with virtually no mixing between layers. 
- Fluid particles move in definite and observable paths or stream lines. 
- The flow is characteristic of viscous (thick) fluid or is one in which viscosity of the fluid plays a significant part. 
 
turbulent flow - Answer-Irregular movement of particles of the fluid. 
 
What do you use to determine quantity of air flowing through the duc...
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