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GCAP Industrial Ammonia Refrigeration Training
Exam final update Questions and Answers |With
100% Verified Solutions | Updated & Verified |
A home air-conditioner is rated to remove 24,000 BTUs in one hour.
What is the tonnage rating?
A. 1 Ton
B. 2 Ton
C. 3 Ton
D. 4 Ton - ✔ANSWER✔-B. 2 Ton. (12,000 BTUs equals one hour.
12,000 x 2 = 24,000 BTU's = 2 ton)
Compressors pump vapor only and they are sized by what requirement?
A. CFM
B. GPM
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C. MPH
D. KPH - ✔ANSWER✔-A. CFM (Cubic Feet per Minute)
Which is Not a secondary coolant?
A. Sodium Chloride
B. Calcium Chloride
C. Glycol
D. R-134a - ✔ANSWER✔-D. R-134a
What is a King Valve? - ✔ANSWER✔-First liquid manual closing
valve leaving the HPR (High Pressure Receiver)
Calculate the compression ratio for the following information:
Suction Pressure: 33 PSIG Discharge Pressure: 181 PSIG
Suction temp: 27° F Discharge Temp: 178° F
Motor Amps: 55 Oil Pressure: 44 PSID - ✔ANSWER✔-4.10:1 (to
convert add 14.7 to both Suction and Discharge Pressure and divide)
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What pressure scale must be used to calculate a compression ratio? -
✔ANSWER✔-PSIA
When should you track oil in a refrigeration system? - ✔ANSWER✔-
When it is added and removed
How many groups of halocarbons are there? - ✔ANSWER✔-3
Groups
Zeotropic and Azeotropic or types of refrigerants that are considered to
be? - ✔ANSWER✔-Blends or mixtures.
Air (non-condensable gas) in an Ammonia system will not cause what? -
✔ANSWER✔-Lower suction pressure.
To put a solenoid in AUTO, it's Stem must be screwed _____________.
- ✔ANSWER✔-Depends on manufacturer and model.
What should an Operator have the ability to do from outside the doors to
the engine room? - ✔ANSWER✔-Initiate the emergency shut down
switches and exhaust fans.
Approximately how many BTU's does it take to convert 1 pound of
saturated liquid Ammonia to 1 pound of saturated gas? -
GCAP Industrial Ammonia Refrigeration Training
Exam final update Questions and Answers |With
100% Verified Solutions | Updated & Verified |
A home air-conditioner is rated to remove 24,000 BTUs in one hour.
What is the tonnage rating?
A. 1 Ton
B. 2 Ton
C. 3 Ton
D. 4 Ton - ✔ANSWER✔-B. 2 Ton. (12,000 BTUs equals one hour.
12,000 x 2 = 24,000 BTU's = 2 ton)
Compressors pump vapor only and they are sized by what requirement?
A. CFM
B. GPM
,2 | Page
C. MPH
D. KPH - ✔ANSWER✔-A. CFM (Cubic Feet per Minute)
Which is Not a secondary coolant?
A. Sodium Chloride
B. Calcium Chloride
C. Glycol
D. R-134a - ✔ANSWER✔-D. R-134a
What is a King Valve? - ✔ANSWER✔-First liquid manual closing
valve leaving the HPR (High Pressure Receiver)
Calculate the compression ratio for the following information:
Suction Pressure: 33 PSIG Discharge Pressure: 181 PSIG
Suction temp: 27° F Discharge Temp: 178° F
Motor Amps: 55 Oil Pressure: 44 PSID - ✔ANSWER✔-4.10:1 (to
convert add 14.7 to both Suction and Discharge Pressure and divide)
, 3 | Page
What pressure scale must be used to calculate a compression ratio? -
✔ANSWER✔-PSIA
When should you track oil in a refrigeration system? - ✔ANSWER✔-
When it is added and removed
How many groups of halocarbons are there? - ✔ANSWER✔-3
Groups
Zeotropic and Azeotropic or types of refrigerants that are considered to
be? - ✔ANSWER✔-Blends or mixtures.
Air (non-condensable gas) in an Ammonia system will not cause what? -
✔ANSWER✔-Lower suction pressure.
To put a solenoid in AUTO, it's Stem must be screwed _____________.
- ✔ANSWER✔-Depends on manufacturer and model.
What should an Operator have the ability to do from outside the doors to
the engine room? - ✔ANSWER✔-Initiate the emergency shut down
switches and exhaust fans.
Approximately how many BTU's does it take to convert 1 pound of
saturated liquid Ammonia to 1 pound of saturated gas? -
