RI JOURNEYMAN END OF COURSE QUESTIONS AND
ANSWERS GRADED A+
✔✔__________________ occurs when soldering a copper connection and solder is
drawn into the joint. - ✔✔Capillary action
✔✔Because ______________________ when installing an evaporator coil, before
soldering, the end of the evaporator lines must be opened to the atmosphere. - ✔✔the
coil is pre-charged with nitrogen.
✔✔_____________ is a type of metering device is used in a 12 seer split air
conditioning system. - ✔✔A TXV
✔✔If the ductwork is located in an attic or crawlspace it must be ___________- -
✔✔insulated.
✔✔A secondary drain pan must _____________________ - ✔✔must have a minimum
perimeter of 3" larger than the unit being served.
✔✔A secondary drain line __________________________ - ✔✔must be located in a
conspicuous place to serve as an alarm.
✔✔A normally closed float switch that is connected to an auxiliary drain pan should be
wired to control __________________ - ✔✔the contactor coil.
✔✔Residential or light commercial air conditioning condensers are usually fabricated
from ___________________ - ✔✔aluminum or copper.
✔✔An indoor evaporator coil must be installed ___________________ - ✔✔at least 2"
to 3" above the heat exchanger.
✔✔The purpose of the metal plates that are commonly installed around an uncased
evaporator coil are ____________ - ✔✔to force the air flow through the coil.
✔✔A "P" trap in installed ________________________ - ✔✔when an evaporator coil is
located on the negative side of the blower.
✔✔The purpose of the "p" trap is _____________________________ - ✔✔to prevent
condensation from entering the duct system.
✔✔The purpose of he compressor is that ____________________ - ✔✔it tales low-
pressure gas and changes it into a high-pressure gas.
, ✔✔A crankcase heater is used on a compressor to _________________ -
✔✔evaporate liquid refrigerant out of the compressor oil.
✔✔____________________ are the two most common types of compressors used in
residential and light commercial air conditioning systems. - ✔✔Reciprocating and scroll
✔✔A ____________ compressor is considered a non-positive displacement
compressor. - ✔✔centrifugal
✔✔_______________ is a type of compressor is considered a non-positive
displacement compressor. - ✔✔Hermetic
✔✔_________________ is a type of compressor that is completely sealed and must be
replaced if it has internal damage. - ✔✔Hermetic
✔✔_____________________ are two types of compressor lubrication systems. -
✔✔Forced and splash lubrication
✔✔___________________ are how compressors are cooled in residential and light
commercial air conditioning systems. - ✔✔Refrigerant and air
✔✔___________________ are two types of compressor drives. - ✔✔Direct and belt
✔✔______________ compressor is not internally driven by a motor. - ✔✔The open
type
✔✔___________________ compressor can handle some liquid refrigerant flood back. -
✔✔The scroll type
✔✔____________________ is how the compressor ratio is determined. - ✔✔Discharge
PSIA + Suction PSIA
✔✔_________________ is commonly used with a two speed compressor. - ✔✔A two
stage thermostat
✔✔The term recovery means______________________ - ✔✔to remove and store
refrigerant from an appliance.
✔✔___________________________ are the three types of recovery methods that are
being used today. - ✔✔Charge migration, use of the appliance compressor and use of a
refrigerant recovery unit
ANSWERS GRADED A+
✔✔__________________ occurs when soldering a copper connection and solder is
drawn into the joint. - ✔✔Capillary action
✔✔Because ______________________ when installing an evaporator coil, before
soldering, the end of the evaporator lines must be opened to the atmosphere. - ✔✔the
coil is pre-charged with nitrogen.
✔✔_____________ is a type of metering device is used in a 12 seer split air
conditioning system. - ✔✔A TXV
✔✔If the ductwork is located in an attic or crawlspace it must be ___________- -
✔✔insulated.
✔✔A secondary drain pan must _____________________ - ✔✔must have a minimum
perimeter of 3" larger than the unit being served.
✔✔A secondary drain line __________________________ - ✔✔must be located in a
conspicuous place to serve as an alarm.
✔✔A normally closed float switch that is connected to an auxiliary drain pan should be
wired to control __________________ - ✔✔the contactor coil.
✔✔Residential or light commercial air conditioning condensers are usually fabricated
from ___________________ - ✔✔aluminum or copper.
✔✔An indoor evaporator coil must be installed ___________________ - ✔✔at least 2"
to 3" above the heat exchanger.
✔✔The purpose of the metal plates that are commonly installed around an uncased
evaporator coil are ____________ - ✔✔to force the air flow through the coil.
✔✔A "P" trap in installed ________________________ - ✔✔when an evaporator coil is
located on the negative side of the blower.
✔✔The purpose of the "p" trap is _____________________________ - ✔✔to prevent
condensation from entering the duct system.
✔✔The purpose of he compressor is that ____________________ - ✔✔it tales low-
pressure gas and changes it into a high-pressure gas.
, ✔✔A crankcase heater is used on a compressor to _________________ -
✔✔evaporate liquid refrigerant out of the compressor oil.
✔✔____________________ are the two most common types of compressors used in
residential and light commercial air conditioning systems. - ✔✔Reciprocating and scroll
✔✔A ____________ compressor is considered a non-positive displacement
compressor. - ✔✔centrifugal
✔✔_______________ is a type of compressor is considered a non-positive
displacement compressor. - ✔✔Hermetic
✔✔_________________ is a type of compressor that is completely sealed and must be
replaced if it has internal damage. - ✔✔Hermetic
✔✔_____________________ are two types of compressor lubrication systems. -
✔✔Forced and splash lubrication
✔✔___________________ are how compressors are cooled in residential and light
commercial air conditioning systems. - ✔✔Refrigerant and air
✔✔___________________ are two types of compressor drives. - ✔✔Direct and belt
✔✔______________ compressor is not internally driven by a motor. - ✔✔The open
type
✔✔___________________ compressor can handle some liquid refrigerant flood back. -
✔✔The scroll type
✔✔____________________ is how the compressor ratio is determined. - ✔✔Discharge
PSIA + Suction PSIA
✔✔_________________ is commonly used with a two speed compressor. - ✔✔A two
stage thermostat
✔✔The term recovery means______________________ - ✔✔to remove and store
refrigerant from an appliance.
✔✔___________________________ are the three types of recovery methods that are
being used today. - ✔✔Charge migration, use of the appliance compressor and use of a
refrigerant recovery unit
