Nocti Hvac Final Exam Questions with
Correct Detailed Answers | Already
Graded A+
An Hvac system that depends on the temperatures below the ground surface as
an operation factor is a ..
Geothermal heat pump
when putting out a fire involving oily rags use a ________ fire extinguisher?
Class B
The best tool to open and close the stem access valve on a refrigeration system is
the_______
Refrigeration service wrench
Which power tool is best to cut steel rod?
Sawzall
,CSST (steal tubing) connections
can be used with both natural and propane gas equipment
The type of pipe commonly used for condensation drainage on central air
conditioning system is
PVC
When pressure testing completed copper tubing assembly with pressurized
nitrogen the nitrogen cylinder should
always be on the ground
connections should be permanently connected with_____ on drainage piping
assemblies that uses PVC piping
Glue specified for PVC pipe
Using oxygen to purge copper tubing after brazing
could cause and explosion
, Two gases that considered non-condensable in a refrigeration
Air and Nitrogen
Residential air condition system have a super heat range of ____ degrees under
normal operating conditions?
8 to 12
which is not a condition of low superheat on an air conditioning system
Refrigerant undercharged
The reason that subcooling would be below 8 degrees on air conditioning system
dirty or blocked condenser coil
The cause for excessive subcooling in an air conditioning system ?
system operating in low ambient conditions
when reading blue prints for proper wall and duct location, the technician should
look at the ______
Correct Detailed Answers | Already
Graded A+
An Hvac system that depends on the temperatures below the ground surface as
an operation factor is a ..
Geothermal heat pump
when putting out a fire involving oily rags use a ________ fire extinguisher?
Class B
The best tool to open and close the stem access valve on a refrigeration system is
the_______
Refrigeration service wrench
Which power tool is best to cut steel rod?
Sawzall
,CSST (steal tubing) connections
can be used with both natural and propane gas equipment
The type of pipe commonly used for condensation drainage on central air
conditioning system is
PVC
When pressure testing completed copper tubing assembly with pressurized
nitrogen the nitrogen cylinder should
always be on the ground
connections should be permanently connected with_____ on drainage piping
assemblies that uses PVC piping
Glue specified for PVC pipe
Using oxygen to purge copper tubing after brazing
could cause and explosion
, Two gases that considered non-condensable in a refrigeration
Air and Nitrogen
Residential air condition system have a super heat range of ____ degrees under
normal operating conditions?
8 to 12
which is not a condition of low superheat on an air conditioning system
Refrigerant undercharged
The reason that subcooling would be below 8 degrees on air conditioning system
dirty or blocked condenser coil
The cause for excessive subcooling in an air conditioning system ?
system operating in low ambient conditions
when reading blue prints for proper wall and duct location, the technician should
look at the ______
