HVAC Heating final Exam Review Questions And Answers 100% Pass
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Course
HVAC
Institution
HVAC
HVAC Heating final Exam Review
Questions And Answers 100% Pass
Water boils at ______degrees celsius - answer100
In what direction does a vapor exert force - answerAll
How many BTUs are required to convert 27 pounds of 6°F Ice to 1398°F Steam -
answer51,300
What is an integrated furnace cont...
HVAC Heating final Exam Review
Questions And Answers 100% Pass
Water boils at ______degrees celsius - answer✔100
In what direction does a vapor exert force - answer✔All
How many BTUs are required to convert 27 pounds of 6°F Ice to 1398°F Steam -
answer✔51,300
What is an integrated furnace control (IFC)? - answer✔An electronic module to control the
operation of the furnace.
Which of these are good insulators? - answer✔Air, Fiberglass
What component transfers heat to room air and is a barrier that separates combustion gases from
room air in a gas fired furnace/ - answer✔Heat exchanger
Water freezes at ______degrees fahrenhei - answer✔32
The standard stmospheric pressure at sea level is _____. - answer✔29.92" Hg
An orifice meters the quantity of gas to the burner as well as directs the gas stream. -
answer✔True
The function of the auxiliary limit switch in heating applications is to________________ -
answer✔sense room return air temperature and interrupt the burner operation when the
temperature becomes too hot.
The primary purpose of the gas valve is to: (select all that apply) - answer✔start and stop the
flow of gas
A manometer is used to - answer✔measure gas pressure
Heat that causes no change in thermostat reading is called - answer✔latent
The specific gravity of Natural gas is 0.60 therefore it is ______ than air and ________ when
released in air - answer✔lighter, rises
Water boils at ______degrees fahrenheit - answer✔212
An ice machine can produce a 25 pound block of 10°F ice every 15 minutes. If the supply water
to the ice machine is 75°F, how many total BTUs are removed from all the water in one day? -
answer✔475,200
An orifice in a natural gas spud will be ________ the orifice in a propane spud - answer✔larger
than
A Btu is defined as - answer✔the amount of heat required to raise one pound of water one degree
fahrenheit
Natural gas is composed of 90 to 95% - answer✔Methane
Pressures in gas lines are usually measured using a __________? - answer✔manometer
Air that enters a draft hood of a natural gas-fired furnace and mixes with the combustion
products
Air that is added to the combustion process to ensure complete combustion of a fuel gas
Air that is introduced to a furnace's burner before the combustion process has taken place
Air that is introduced to a furnace's burner to mix with the burning gas-primary air mixture after
combustion takes place and that supports combustion.
A combination of primary and secondary air. - answer✔Dilution Air
Excess Air
Primary Air
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