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GCAP INDUSTRIAL AMMONIA REFRIGERATION TRAINING EXAM
NEWEST 2025/2026 ACTUAL EXAM WITH COMPLETE QUESTIONS
AND CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
High discharge temperatures are good for a compressor, creating
a black sooty deposit. True or False - ANSWER-False
How are blades forced outwards in a rotary vane compressor -
ANSWER-Centrifugal force
If there is a small percentage of ammonia exhort into the oil, it will
cause the oil to _______________ when the pressure upon the
oil is lowered? - ANSWER-Foam
Are oil and liquid ammonia considered to be Misible?( come
together to create a new solution ) - ANSWER-No, ammonia is
heavier than oil
No, ammonia is heavier than oil - ANSWER-
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If the compressor took a slug of liquid ammonia and is
hydraulically pounding what action must an operator do if all
possible? - ANSWER-Shut it off, and notify management
immediately.
What is a style of oil pulling for compressors? - ANSWER-Liquid
injection, thermosiphon, water/ glycol
With impingement style oil separator what are the steps of
separation - ANSWER-Impingement, change of direction, gravity,
and coalescing filters. 4 steps
Two-stage compression is considered to be? - ANSWER-At least
two compressors compressing the gas in the series.
Which compressor may have safety springs internally for liquid? -
ANSWER-Reciprocating
Which compressor is commonly started first in starting up a two
stage system? - ANSWER-The high stage compressor
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Rotary veins are limited to what type of application and ammonia
refrigeration? - ANSWER-Low stage booster applications of a
two-stage system.
What is a style of the condenser? - ANSWER-Air cooled, water
cooled, evaporative cooled
Before a condenser converse a gas to a liquid, what must happen
to the gas? - ANSWER-The gas must be De-superheated
Evaporative condensers - ANSWER-Derive their heat rejection
capability from the evaporation of water.
Where do you manually purge and condenser when it is off -
ANSWER-From the highest point (inlet gas)of the condenser, with
condenser off or isolated
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Where should on auto purger be piped from on the condenser? -
ANSWER-From the lowest point (outlet drain) of a condenser,
with condenser running.
Liquid drain from the condenser is 82°F and head pressure is 182
psi G. What is indicated? - ANSWER-Portable noncondensible
gases
What is the direction of flow through every condenser? -
ANSWER-Refrigerant enters at the top, leaves at the bottom
Can wetbulb temperature affect the efficiency of an evaporative
cooled condenser - ANSWER-Yes
What conditions are associated with high head pressure? -
ANSWER-Excessive energy used and compressor wear
In order to convert 1 pound of saturated NH3 liquid to saturated
NH3 gas, approximately how much heat must be absorbed into
the liquid at saturation conditions? - ANSWER-561 BTUs
GCAP INDUSTRIAL AMMONIA REFRIGERATION TRAINING EXAM
NEWEST 2025/2026 ACTUAL EXAM WITH COMPLETE QUESTIONS
AND CORRECT DETAILED ANSWERS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
High discharge temperatures are good for a compressor, creating
a black sooty deposit. True or False - ANSWER-False
How are blades forced outwards in a rotary vane compressor -
ANSWER-Centrifugal force
If there is a small percentage of ammonia exhort into the oil, it will
cause the oil to _______________ when the pressure upon the
oil is lowered? - ANSWER-Foam
Are oil and liquid ammonia considered to be Misible?( come
together to create a new solution ) - ANSWER-No, ammonia is
heavier than oil
No, ammonia is heavier than oil - ANSWER-
,2|Page
If the compressor took a slug of liquid ammonia and is
hydraulically pounding what action must an operator do if all
possible? - ANSWER-Shut it off, and notify management
immediately.
What is a style of oil pulling for compressors? - ANSWER-Liquid
injection, thermosiphon, water/ glycol
With impingement style oil separator what are the steps of
separation - ANSWER-Impingement, change of direction, gravity,
and coalescing filters. 4 steps
Two-stage compression is considered to be? - ANSWER-At least
two compressors compressing the gas in the series.
Which compressor may have safety springs internally for liquid? -
ANSWER-Reciprocating
Which compressor is commonly started first in starting up a two
stage system? - ANSWER-The high stage compressor
,3|Page
Rotary veins are limited to what type of application and ammonia
refrigeration? - ANSWER-Low stage booster applications of a
two-stage system.
What is a style of the condenser? - ANSWER-Air cooled, water
cooled, evaporative cooled
Before a condenser converse a gas to a liquid, what must happen
to the gas? - ANSWER-The gas must be De-superheated
Evaporative condensers - ANSWER-Derive their heat rejection
capability from the evaporation of water.
Where do you manually purge and condenser when it is off -
ANSWER-From the highest point (inlet gas)of the condenser, with
condenser off or isolated
, 4|Page
Where should on auto purger be piped from on the condenser? -
ANSWER-From the lowest point (outlet drain) of a condenser,
with condenser running.
Liquid drain from the condenser is 82°F and head pressure is 182
psi G. What is indicated? - ANSWER-Portable noncondensible
gases
What is the direction of flow through every condenser? -
ANSWER-Refrigerant enters at the top, leaves at the bottom
Can wetbulb temperature affect the efficiency of an evaporative
cooled condenser - ANSWER-Yes
What conditions are associated with high head pressure? -
ANSWER-Excessive energy used and compressor wear
In order to convert 1 pound of saturated NH3 liquid to saturated
NH3 gas, approximately how much heat must be absorbed into
the liquid at saturation conditions? - ANSWER-561 BTUs
