REFRIGERATION TRAINING NON
FLASHCARDS QUESTIONS &
ANSWERS CORRECT 100%
1% concentration of Ammonia is equal to what in parts per million?
A. 10 PPM
B. 100 PPM
C. 1,000 PPM
D. 10,000 PPM - ANSWERD. 10,000 PPM
1/2 % of Ammonia is it deadly concentration.
A. True
B. False - ANSWERA. True (5,000)PPM
Which is Not a secondary coolant?
A. Sodium Chloride
B. Calcium Chloride
C. Glycol
D. R-134a - ANSWERD. R-134a
What is a King Valve? - ANSWERFirst 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 - ANSWER4.10:1 (to convert add 14.7 to
both Suction and Discharge Pressure and divide)
What pressure scale must be used to calculate a compression ratio? -
ANSWERPSIA
When should you track oil in a refrigeration system? - ANSWERWhen it is added
and removed
How many groups of halocarbons are there? - ANSWER3 Groups
, Zeotropic and Azeotropic or types of refrigerants that are considered to be? -
ANSWERBlends or mixtures.
Ammonia is what on the PH scale?
A. 11.6
B. 3.7
C. 7.0
D. 5.2 - ANSWERA. 11.6
More than 100 pounds release of NH3 in 24 hours is a reportable for release .
A. True
B. False - ANSWERA. True
There are four primary types of injury with exposure to liquid Ammonia. Please list all
4. - ANSWER1. Dehydration burn
2. Chemical burn
3. Thermal burn
4. Respiratory burn
Ammonia causes cancer.
A. True
B. False - ANSWERB. False
If Ammonia, in liquid form, makes its way in to the eyes There is usually damage that
is non- reversible resulting in blindness.
A. True
B. False - ANSWERA. True
Most MSDS sheets require a rinse/flush to the body/eyes for a minimum of how
many minutes when dealing with the chemical Ammonia?
A. 2 minutes
B. 5 minutes
C. 10 minutes
D. 15 minutes - ANSWERC. 10 minutes
Do you ever want to put liquid water on liquid Ammonia when the refrigerant is that
atmospheric conditions?
A. Yes
B. No - ANSWERB. No
Can you knock down an Ammonia vapor cloud at atmospheric conditions using
water?