GCAP INDUSTRIAL AMMONIA REFRIGERATION
UPDATED FINAL EXAM QUESTIONS AND ANSWERS
SURE A+
✔✔Should you proceed through invisible cloud of Ammonia?
A. Yes
B. No - ✔✔B. No
✔✔If you see a green diamond with the number 1005 on the transportation vehicle,
what is inside the tank.
A. Carbon Dioxide
B. Ammonia
C. Propane
D. Natural Gas - ✔✔B. Ammonia
✔✔What is the fire diamond rating for pure Ammonia?
Health#:______ /Color:______
Fire#:______ /Color:______
Reactivity#:______/Color:______ - ✔✔Health#:3 /Color: Blue
Fire#: 3 /Color: Red
Reactivity# 0 /Color: Yellow
✔✔What are the two primary ways of finding small leaks for Ammonia?
____________ or ____________ - ✔✔Sulfur stick or PH paper
✔✔Hydrostatic Expansion will increase pressure how much per degree of Fahrenheit
heat exposure for Ammonia?
A. 10 PSI
B. 40,000 PSI
C. 100 - 150 PSI
D. 1 - 10 PSI - ✔✔C. 100 - 150 psi
✔✔Figure out the volume of this room. Length is 10 feet, width is 14 feet, and Height is
20 feet.
A. 44 cubic feet
B. 2,800 cubic feet
C. 160 cubic feet
D. 5,600 cubic feet - ✔✔B. 2800 cubic ft (10x14x20)
, ✔✔A rate is a measure of something to a fixed unit such as time. What is tonnage?
A. Time
B. BTU's
C. Heat transfer in BTU's per time
D. Heat transfer in PSIG per time - ✔✔C. Heat transfer in BTU's per time
✔✔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 - ✔✔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
C. MPH
D. KPH - ✔✔A. CFM (Cubic Feet per Minute)
✔✔Which is Not a secondary coolant?
A. Sodium Chloride
B. Calcium Chloride
C. Glycol
D. R-134a - ✔✔D. R-134a
✔✔What is a King Valve? - ✔✔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 - ✔✔4.10:1 (to convert add 14.7 to both Suction
and Discharge Pressure and divide)
✔✔What pressure scale must be used to calculate a compression ratio? - ✔✔PSIA
UPDATED FINAL EXAM QUESTIONS AND ANSWERS
SURE A+
✔✔Should you proceed through invisible cloud of Ammonia?
A. Yes
B. No - ✔✔B. No
✔✔If you see a green diamond with the number 1005 on the transportation vehicle,
what is inside the tank.
A. Carbon Dioxide
B. Ammonia
C. Propane
D. Natural Gas - ✔✔B. Ammonia
✔✔What is the fire diamond rating for pure Ammonia?
Health#:______ /Color:______
Fire#:______ /Color:______
Reactivity#:______/Color:______ - ✔✔Health#:3 /Color: Blue
Fire#: 3 /Color: Red
Reactivity# 0 /Color: Yellow
✔✔What are the two primary ways of finding small leaks for Ammonia?
____________ or ____________ - ✔✔Sulfur stick or PH paper
✔✔Hydrostatic Expansion will increase pressure how much per degree of Fahrenheit
heat exposure for Ammonia?
A. 10 PSI
B. 40,000 PSI
C. 100 - 150 PSI
D. 1 - 10 PSI - ✔✔C. 100 - 150 psi
✔✔Figure out the volume of this room. Length is 10 feet, width is 14 feet, and Height is
20 feet.
A. 44 cubic feet
B. 2,800 cubic feet
C. 160 cubic feet
D. 5,600 cubic feet - ✔✔B. 2800 cubic ft (10x14x20)
, ✔✔A rate is a measure of something to a fixed unit such as time. What is tonnage?
A. Time
B. BTU's
C. Heat transfer in BTU's per time
D. Heat transfer in PSIG per time - ✔✔C. Heat transfer in BTU's per time
✔✔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 - ✔✔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
C. MPH
D. KPH - ✔✔A. CFM (Cubic Feet per Minute)
✔✔Which is Not a secondary coolant?
A. Sodium Chloride
B. Calcium Chloride
C. Glycol
D. R-134a - ✔✔D. R-134a
✔✔What is a King Valve? - ✔✔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 - ✔✔4.10:1 (to convert add 14.7 to both Suction
and Discharge Pressure and divide)
✔✔What pressure scale must be used to calculate a compression ratio? - ✔✔PSIA
