4/1/25, 2:23 PM ESCO COMMERCIAL REFRIGERATION ACTUAL EXAM (VERSION A AND B) COMPLETE ACCURATE EXAM QUESTIONS WITH…
ESCO COMMERCIAL REFRIGERATION ACTUAL
EXAM (VERSION A AND B) COMPLETE
ACCURATE EXAM QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+
Save
Terms in this set (94)
Multiple compressors c. Capacity control.
provide:
a. Positive oil return.
b. Lower humidity in high
humidity locales.
c. Capacity control.
d. Zone control.
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,4/1/25, 2:23 PM ESCO COMMERCIAL REFRIGERATION ACTUAL EXAM (VERSION A AND B) COMPLETE ACCURATE EXAM QUESTIONS WITH…
In a dry type (direct a. Operate at high efficiency.
expansion) evaporator,
liquid refrigerant must boil
away as close to the end
of the coil as possible in
order to:
a. Operate at high
efficiency.
b. Ensure that frost does
not accumulate.
c. Sub-cool the
compressor.
d. Ensure proper oil
return.
The difference between a. Evaporator superheat.
the temperature of the
refrigerant boiling in the
evaporator and the
temperature at the
evaporator outlet is known
as:
a. Evaporator superheat.
b. Latent heat.
c. Evaporator sub-cooling.
d. Sublimation.
An expansion device that d. A flooded evaporator.
is stuck open will cause:
a. Low suction pressure.
b. A starved evaporator.
c. Excessive superheat.
d. A flooded evaporator.
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,4/1/25, 2:23 PM ESCO COMMERCIAL REFRIGERATION ACTUAL EXAM (VERSION A AND B) COMPLETE ACCURATE EXAM QUESTIONS WITH…
Superheat measurements d. With the system operating at design conditions.
are best taken:
a. During a hot pull down.
b. At 8ºF to 12°F.
c. During defrost.
d. With the system
operating at design
conditions.
A technician is checking d. A blocked distributor.
the superheat on a multi-
circuit evaporator and
finds one of the circuits
has a superheat that is
higher than the others. This
could be caused by:
a. A dirty coil.
b. A refrigerant
overcharge.
c. Uneven air distribution.
d. A blocked distributor.
A TEV with an external a. Evaporators with a high pressure drop.
equalizer is used on:
a. Evaporators with a high
pressure drop.
b. Evaporators with a low
pressure drop.
c. High temperature
applications only.
d. All evaporators.
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, 4/1/25, 2:23 PM ESCO COMMERCIAL REFRIGERATION ACTUAL EXAM (VERSION A AND B) COMPLETE ACCURATE EXAM QUESTIONS WITH…
Dry type evaporators a. 8ºF to 12°F.
operate most efficiently
with a superheat setting of
approximately:
a. 8ºF to 12°F.
b. 13°F to 19°F.
c. 20°F to 30°F.
d. 31°F to 40°F.
An evaporator used to c. The circulator.
chill liquids is operating
with a normal superheat
setting, but the system is
not cooling the product
properly. Which of the
following is the most likely
cause?
a. Overcharge of
refrigerant.
b. Undercharge of
refrigerant.
c. The circulator.
d. The TEV.
What time interval is c. At least ½ hour.
required between each
superheat adjustment?
a. Not less than 1 hour.
b. About 10-15 minutes.
c. At least ½ hour.
d. No time delay.
https://quizlet.com/1025600325/esco-commercial-refrigeration-actual-exam-version-a-and-b-complete-accurate-exam-questions-with-detailed-verified… 4/39
ESCO COMMERCIAL REFRIGERATION ACTUAL
EXAM (VERSION A AND B) COMPLETE
ACCURATE EXAM QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+
Save
Terms in this set (94)
Multiple compressors c. Capacity control.
provide:
a. Positive oil return.
b. Lower humidity in high
humidity locales.
c. Capacity control.
d. Zone control.
https://quizlet.com/1025600325/esco-commercial-refrigeration-actual-exam-version-a-and-b-complete-accurate-exam-questions-with-detailed-verified… 1/39
,4/1/25, 2:23 PM ESCO COMMERCIAL REFRIGERATION ACTUAL EXAM (VERSION A AND B) COMPLETE ACCURATE EXAM QUESTIONS WITH…
In a dry type (direct a. Operate at high efficiency.
expansion) evaporator,
liquid refrigerant must boil
away as close to the end
of the coil as possible in
order to:
a. Operate at high
efficiency.
b. Ensure that frost does
not accumulate.
c. Sub-cool the
compressor.
d. Ensure proper oil
return.
The difference between a. Evaporator superheat.
the temperature of the
refrigerant boiling in the
evaporator and the
temperature at the
evaporator outlet is known
as:
a. Evaporator superheat.
b. Latent heat.
c. Evaporator sub-cooling.
d. Sublimation.
An expansion device that d. A flooded evaporator.
is stuck open will cause:
a. Low suction pressure.
b. A starved evaporator.
c. Excessive superheat.
d. A flooded evaporator.
https://quizlet.com/1025600325/esco-commercial-refrigeration-actual-exam-version-a-and-b-complete-accurate-exam-questions-with-detailed-verified… 2/39
,4/1/25, 2:23 PM ESCO COMMERCIAL REFRIGERATION ACTUAL EXAM (VERSION A AND B) COMPLETE ACCURATE EXAM QUESTIONS WITH…
Superheat measurements d. With the system operating at design conditions.
are best taken:
a. During a hot pull down.
b. At 8ºF to 12°F.
c. During defrost.
d. With the system
operating at design
conditions.
A technician is checking d. A blocked distributor.
the superheat on a multi-
circuit evaporator and
finds one of the circuits
has a superheat that is
higher than the others. This
could be caused by:
a. A dirty coil.
b. A refrigerant
overcharge.
c. Uneven air distribution.
d. A blocked distributor.
A TEV with an external a. Evaporators with a high pressure drop.
equalizer is used on:
a. Evaporators with a high
pressure drop.
b. Evaporators with a low
pressure drop.
c. High temperature
applications only.
d. All evaporators.
https://quizlet.com/1025600325/esco-commercial-refrigeration-actual-exam-version-a-and-b-complete-accurate-exam-questions-with-detailed-verified… 3/39
, 4/1/25, 2:23 PM ESCO COMMERCIAL REFRIGERATION ACTUAL EXAM (VERSION A AND B) COMPLETE ACCURATE EXAM QUESTIONS WITH…
Dry type evaporators a. 8ºF to 12°F.
operate most efficiently
with a superheat setting of
approximately:
a. 8ºF to 12°F.
b. 13°F to 19°F.
c. 20°F to 30°F.
d. 31°F to 40°F.
An evaporator used to c. The circulator.
chill liquids is operating
with a normal superheat
setting, but the system is
not cooling the product
properly. Which of the
following is the most likely
cause?
a. Overcharge of
refrigerant.
b. Undercharge of
refrigerant.
c. The circulator.
d. The TEV.
What time interval is c. At least ½ hour.
required between each
superheat adjustment?
a. Not less than 1 hour.
b. About 10-15 minutes.
c. At least ½ hour.
d. No time delay.
https://quizlet.com/1025600325/esco-commercial-refrigeration-actual-exam-version-a-and-b-complete-accurate-exam-questions-with-detailed-verified… 4/39
