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ESCO LIGHT COMMERCIAL
REFRIGERATION EXAM 2026
QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
In a dry type (direct expansion) evaporator, liquid refrigerant must
boil away as close to the end of the coil as possible in order to:
The difference between the temperature of the refrigerant boiling
in the evaporator and the temperature at theevaporator outlet is
known as:
An expansion device that is stuck open will cause:
When measuring evaporator superheat on a commercial system
that has a long suction line, the pressure reading should be taken
at the:
Superheat measurements are best taken:
Atechnician is checking 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 TEV with an external equalizer is used on:
Dry type evaporators operate most efficiently with a superheat
setting of approximately:
An evaporator used to chill liquids si operating with a normal
superheat setting, but the system is not cooling the product
properly. Which of the following is the most likely cause?
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What time interval is required between each superheat
adjustment?
Alow temperature evaporator used for cooling space or product
refrigeration:
Some special applications use aflooded evaporator (operated full
of refrigerant). nI order to maintain the proper level of liquid
refrigerant, a
type metering device is used.
A properly functioning condenser will first;
The effect of an inefficient water cooled condenser will;
The refrigerant condensing temperature in a water cooled
condenser is normally about
higher than the leaving water.
The refrigerant in an air cooled condenser will normally condense
at approximately
higher temperature than the air passing over it.
Workable head pressure during periods of lowambient
temperature can be achieved by using;
Cooling towers that pass air over water to remove system heat
are limited in capacity by:
Parallel compressors often referred to as a rack system may use;
The major difference between a cooling tower and an evaporative
condenser is:
Multiple compressors provide:
Adirty evaporator and subsequent low evaporator pressures will
cause:
ESCO LIGHT COMMERCIAL
REFRIGERATION EXAM 2026
QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
In a dry type (direct expansion) evaporator, liquid refrigerant must
boil away as close to the end of the coil as possible in order to:
The difference between the temperature of the refrigerant boiling
in the evaporator and the temperature at theevaporator outlet is
known as:
An expansion device that is stuck open will cause:
When measuring evaporator superheat on a commercial system
that has a long suction line, the pressure reading should be taken
at the:
Superheat measurements are best taken:
Atechnician is checking 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 TEV with an external equalizer is used on:
Dry type evaporators operate most efficiently with a superheat
setting of approximately:
An evaporator used to chill liquids si operating with a normal
superheat setting, but the system is not cooling the product
properly. Which of the following is the most likely cause?
, Page | 2
What time interval is required between each superheat
adjustment?
Alow temperature evaporator used for cooling space or product
refrigeration:
Some special applications use aflooded evaporator (operated full
of refrigerant). nI order to maintain the proper level of liquid
refrigerant, a
type metering device is used.
A properly functioning condenser will first;
The effect of an inefficient water cooled condenser will;
The refrigerant condensing temperature in a water cooled
condenser is normally about
higher than the leaving water.
The refrigerant in an air cooled condenser will normally condense
at approximately
higher temperature than the air passing over it.
Workable head pressure during periods of lowambient
temperature can be achieved by using;
Cooling towers that pass air over water to remove system heat
are limited in capacity by:
Parallel compressors often referred to as a rack system may use;
The major difference between a cooling tower and an evaporative
condenser is:
Multiple compressors provide:
Adirty evaporator and subsequent low evaporator pressures will
cause:
