final exam refrigeration 1 questions with
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answers
What would be a sign of over charging in a system with a high
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side float? - CORRECT ANSWERS ✔✔frost on the suction line
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In a system using a high side float, what would happen if the
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float sank? - CORRECT ANSWERS ✔✔the evaporator would starve
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What unit of measurement are thermostatic expansion valves
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rated in? - CORRECT ANSWERS ✔✔tons of refrigeration
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What is the maximum amount of refrigerant that can be stored in
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a 125 pound cylinder? - CORRECT ANSWERS ✔✔100 Pounds
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What law governs refrigerants and their use and storage? -
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CORRECT ANSWERS ✔✔Section 608 of the Clean Air Act of 1990
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What is refrigerant reclaiming? - CORRECT ANSWERS ✔✔All of
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the above.|\
Which of the following is R-717? - CORRECT ANSWERS
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✔✔Ammonia
What is the term for the heat that increases the temperature of a
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refrigerant? - CORRECT ANSWERS ✔✔sensible heat
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, A refrigeration unit with a capacity of 788,000 Btu/hr, produces
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how many tons of refrigeration? - CORRECT ANSWERS ✔✔65 Tons
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Ammonia compressor low-side compound gauges are usually
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calibrated to read from: - CORRECT ANSWERS ✔✔30" vacuum to
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300 psig |\
Calculate the compression ratio of a compressor operating with a
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suction pressure of 30 psig and a discharge pressure of 125 psig.
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- CORRECT ANSWERS ✔✔3.13
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Calculate the total force exerted on a piston 5 inches in diameter,
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has a 12 inch stroke, and the pressure on the cylinder is 125 psi.
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- CORRECT ANSWERS ✔✔2,453 pounds
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Condenser cooling water with a pH of 10.0 would be considered:
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- CORRECT ANSWERS ✔✔Alkaline
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Cooling tower water pH should be maintained at about: -
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CORRECT ANSWERS ✔✔8 |\ |\
In a refrigeration system, what function does the evaporator
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perform? - CORRECT ANSWERS ✔✔It absorbs heat from the
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system
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answers
What would be a sign of over charging in a system with a high
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
side float? - CORRECT ANSWERS ✔✔frost on the suction line
|\ |\ |\ |\ |\ |\ |\ |\ |\
In a system using a high side float, what would happen if the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
float sank? - CORRECT ANSWERS ✔✔the evaporator would starve
|\ |\ |\ |\ |\ |\ |\ |\
What unit of measurement are thermostatic expansion valves
|\ |\ |\ |\ |\ |\ |\ |\
rated in? - CORRECT ANSWERS ✔✔tons of refrigeration
|\ |\ |\ |\ |\ |\ |\
What is the maximum amount of refrigerant that can be stored in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a 125 pound cylinder? - CORRECT ANSWERS ✔✔100 Pounds
|\ |\ |\ |\ |\ |\ |\ |\ |\
What law governs refrigerants and their use and storage? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Section 608 of the Clean Air Act of 1990
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
What is refrigerant reclaiming? - CORRECT ANSWERS ✔✔All of
|\ |\ |\ |\ |\ |\ |\ |\ |\
the above.|\
Which of the following is R-717? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Ammonia
What is the term for the heat that increases the temperature of a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
refrigerant? - CORRECT ANSWERS ✔✔sensible heat
|\ |\ |\ |\ |\ |\
, A refrigeration unit with a capacity of 788,000 Btu/hr, produces
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
how many tons of refrigeration? - CORRECT ANSWERS ✔✔65 Tons
|\ |\ |\ |\ |\ |\ |\ |\ |\
Ammonia compressor low-side compound gauges are usually
|\ |\ |\ |\ |\ |\ |\
calibrated to read from: - CORRECT ANSWERS ✔✔30" vacuum to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
300 psig |\
Calculate the compression ratio of a compressor operating with a
|\ |\ |\ |\ |\ |\ |\ |\ |\
suction pressure of 30 psig and a discharge pressure of 125 psig.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
- CORRECT ANSWERS ✔✔3.13
|\ |\ |\ |\
Calculate the total force exerted on a piston 5 inches in diameter,
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
has a 12 inch stroke, and the pressure on the cylinder is 125 psi.
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
- CORRECT ANSWERS ✔✔2,453 pounds
|\ |\ |\ |\ |\
Condenser cooling water with a pH of 10.0 would be considered:
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
- CORRECT ANSWERS ✔✔Alkaline
|\ |\ |\ |\
Cooling tower water pH should be maintained at about: -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔8 |\ |\
In a refrigeration system, what function does the evaporator
|\ |\ |\ |\ |\ |\ |\ |\ |\
perform? - CORRECT ANSWERS ✔✔It absorbs heat from the
|\ |\ |\ |\ |\ |\ |\ |\ |\
system
