AHR-110 Exam 3 Study Guide Questions and answers already Graded
A+
The most common type of system leaks are __________ leaks. - ✅✅Standing
A(n) ____________ leak detector requires a lubricant-specific dye be injected into
a charged system to find the leak. - ✅✅Ultraviolet
Removing air and/or other noncondensable gases from a system using a vacuum
pump is called ___________. - ✅✅Degassing
The process of removing both noncondensable gases and water vapor is called
________. - ✅✅Evacuation
Sludge and other solids can be removed from a system by using __________. -
✅✅liquid- and suction-line filter/driers
Atmospheric pressure, 0 psig, is the equivalent of about __________ microns. -
✅✅760,000
(T/F): The process of a solid changing to a vapor without passing through the
liquid state is called dehydration. - ✅✅False
(T/F): A system with Schrader valve gauge ports will take longer to evacuate than
a system with service valves. - ✅✅True
, A ¼ inch service hose will only allow a vacuum pump to pull at _____ CFM,
regardless of the pump's CFM rating. - ✅✅0.8
The mechanical strain of motion, rotation, and refrigerant flow are all associated
with _________ leaks. - ✅✅Vibration-Dependent
The low-pressure side of the system must not be pressurized to more
than_________ when testing for leaks. - ✅✅The low-side design pressure
Standing, pressure-dependent, temperature-dependent, vibration-dependent,
combination-dependent, and micro are all types of - ✅✅Leak Methods
The _____________ is both the greatest asset and the greatest liability of an
electronic leak detector. - ✅✅Sensitivity
A deep vacuum can most accurately be measured in - ✅✅Microns
Which of the tools used during the evacuation process can be wireless and use
Bluetooth technology? - ✅✅Micron Gauge
A ___________ can remove any type of foreign matter that enters a refrigeration
system. - ✅✅Filter Drier
Moisture, acid buildup, and copper plating can all be caused by which of the
following? - ✅✅Air in the System
A+
The most common type of system leaks are __________ leaks. - ✅✅Standing
A(n) ____________ leak detector requires a lubricant-specific dye be injected into
a charged system to find the leak. - ✅✅Ultraviolet
Removing air and/or other noncondensable gases from a system using a vacuum
pump is called ___________. - ✅✅Degassing
The process of removing both noncondensable gases and water vapor is called
________. - ✅✅Evacuation
Sludge and other solids can be removed from a system by using __________. -
✅✅liquid- and suction-line filter/driers
Atmospheric pressure, 0 psig, is the equivalent of about __________ microns. -
✅✅760,000
(T/F): The process of a solid changing to a vapor without passing through the
liquid state is called dehydration. - ✅✅False
(T/F): A system with Schrader valve gauge ports will take longer to evacuate than
a system with service valves. - ✅✅True
, A ¼ inch service hose will only allow a vacuum pump to pull at _____ CFM,
regardless of the pump's CFM rating. - ✅✅0.8
The mechanical strain of motion, rotation, and refrigerant flow are all associated
with _________ leaks. - ✅✅Vibration-Dependent
The low-pressure side of the system must not be pressurized to more
than_________ when testing for leaks. - ✅✅The low-side design pressure
Standing, pressure-dependent, temperature-dependent, vibration-dependent,
combination-dependent, and micro are all types of - ✅✅Leak Methods
The _____________ is both the greatest asset and the greatest liability of an
electronic leak detector. - ✅✅Sensitivity
A deep vacuum can most accurately be measured in - ✅✅Microns
Which of the tools used during the evacuation process can be wireless and use
Bluetooth technology? - ✅✅Micron Gauge
A ___________ can remove any type of foreign matter that enters a refrigeration
system. - ✅✅Filter Drier
Moisture, acid buildup, and copper plating can all be caused by which of the
following? - ✅✅Air in the System
