1
NCCER
NCCER MODULE 5 INTRODUCTION TO
COOLING EXAM QUESTIONS AND ANSWERS
UPDATED (2024/2025) (VERIFIED
ANSWERS)
Which of the following statements about ammonia is true? - ANS ✓Ammonia
piping cannot be constructed from copper
The net weight of a refrigerant cylinder is the_? - ANS ✓Weight of the
contents alone
The construction and labelling of refrigerant containers is governed by_? -
ANS ✓the DOT
In a semi hermetic compressor,_? - ANS ✓The compressor and drive motor
share a common housing
Which type of compressor is typically used only in systems needing 100
tons of capacity or more? - ANS ✓Centrifugal
Which type of condenser is generally used only with small domestic
refrigeration systems? - ANS ✓Plate
For an evaporator to operate a peek efficiency,_? - ANS ✓All of the surface
area inside the tubes must be exposed to flashing liquid
One of the advantages of a fixed metering device is_? - ANS ✓It's low cost
NCCER MODULE
NCCER
NCCER MODULE 5 INTRODUCTION TO
COOLING EXAM QUESTIONS AND ANSWERS
UPDATED (2024/2025) (VERIFIED
ANSWERS)
Which of the following statements about ammonia is true? - ANS ✓Ammonia
piping cannot be constructed from copper
The net weight of a refrigerant cylinder is the_? - ANS ✓Weight of the
contents alone
The construction and labelling of refrigerant containers is governed by_? -
ANS ✓the DOT
In a semi hermetic compressor,_? - ANS ✓The compressor and drive motor
share a common housing
Which type of compressor is typically used only in systems needing 100
tons of capacity or more? - ANS ✓Centrifugal
Which type of condenser is generally used only with small domestic
refrigeration systems? - ANS ✓Plate
For an evaporator to operate a peek efficiency,_? - ANS ✓All of the surface
area inside the tubes must be exposed to flashing liquid
One of the advantages of a fixed metering device is_? - ANS ✓It's low cost
NCCER MODULE
