SkillCat EPA 608 Questions & Answers.

SKILLCAT EPA 608 EXAM | NEWEST l l l l l




ACTUAL EXAM COMPLETE QUESTIONSA l l l l




ND VERIFIED ANSWERS GRADED A+ |100
l l l l l l




% PASS | 2025 UPDATE! l l l l




If large vacuum pump is used, vacuum in the system drops very fast causing t
l l l l l l l l l l l l l l



he evaporating water to cool and freeze rapidly. This results inremoving wat
l l l l l l l l l l l l



er from the system more difficult.
l l l l l




Vacuum pumps are rated by their volumetric capacity, which is typicallyexp
l l l l l l l l l l l



ressed in CFM. T or F - ✔✔✔ Correct Answer > True
l l l l l l l l l l l




Medium-pressure appliance can use which of the following refrigerants:R- l l l l l l l l l




12
R-
22 R- l




123
R-11 - ✔✔✔ Correct Answer > R-12
l l l l l l




Saturated refrigerants have a specific pressure rating at a specific temper
l l l l l l l l l l



ature. If both these parameters are measured, correct refrigerant can be d
l l l l l l l l l l l



etermined by looking at pressure-temperaturechart
l l l l l

,References to the pressure/temperature chart for determining the typeof r
l l l l l l l l l l



efrigerant are only valid if the is known: - l l l l l l l



✔✔✔ Correct Answer > Temperature
l l l l l




Motor Vehicle Air Conditioning (MVAC) service technicians are governe
l l l l l l l l



d under EPA
l section: - ✔✔✔ Correct Answer > 609
l l l l l l l




Ozone is a unstable molecule at stratosphere: T or F? -
l l l l l l l l l l



✔✔✔ CorrectAnswer > True
l l l l l




Ozone at stratosphere is an unstable molecule made up of three oxygen at
l l l l l l l l l l l l



oms. The instability of the molecule allows the free oxygenatoms to react
l l l l l l l l l l l l l



with hydrogen, nitrogen, chlorine and bromine.
l l l l l




Presence of which of the following elements will reduce the stability ofthe
l l l l l l l l l l l l l



ozone depletion organic refrigerant compounds:
l l l l




Chlorine l




Bromine l




Hydrogen
All of the Above - ✔✔✔ Correct Answer > Hydrogen
l l l l l l l l l




Chlorine and Bromine are considered as the elements responsible for the
l l l l l l l l l l l



depletion of ozone layer at stratosphere. CFC compound are highly
l l l l l l l l l

,stable at lower atmosphere and have higher lifetime. Therefore they reach
l l l l l l l l l l l



stratosphere and depletes the ozone layer. Presence of Hydrogenelement i l l l l l l l l l l



n organic refrigerants such as HCFCs and HFCs results in decomposition at lo
l l l l l l l l l l l l



wer atmosphere. Therefore these elements have lower lifetime and canno
l l l l l l l l l



t pose threat to ozone depletion.
l l l l l




If the label identifying the refrigerant is missing, then which method isuse
l l l l l l l l l l l l



d to identify the type of refrigerant? - ✔✔✔ Correct Answer > Pressure-
l l l l l l l l l l l l



Temperature method l




Sale of which of the following refrigerants are not limited totechnicians:
l l l l l l l l l l l




HCFC l




HFC l




CFC
All the refrigerants are restricted - ✔✔✔ Correct Answer > HFC
l l l l l l l l l l




All refrigerant recovery equipment should be checked for
l l l l l l l



on a l l



daily basis: - l l



✔✔✔ Correct Answer > Both Oil level and Refrigerantleaks
l l l l l l l l l l




Typical AC compressors are limited to about l l l l l l



tons of cooling
l l l



capacity - ✔✔✔ Correct Answer > 10 l l l l l l

, The amount of refrigerant that is absorbed in the oil is affected bywhich of t
l l l l l l l l l l l l l l l



he following:
l




pressure alone tem l l




perature alone l




both pressure and temperature -
l l l l



✔✔✔ Correct Answer > bothpressure and temperature
l l l l l l l l




Moisture indicating sight glass is located downstream of the which ofthe foll
l l l l l l l l l l l l



owing:
Filter Drier Expa l l




nsion ValveCom l l




pressor
Condenser - ✔✔✔ Correct Answer > Filter Drier l l l l l l l




When evacuating a system, it is required that the vacuum pump pull amini
l l l l l l l l l l l l l



mum of microns. - ✔✔✔ Correct Answer > 500 microns
l l l l l l l l




The state of the refrigerant leaving the liquid receiver of a refrigerationsyst
l l l l l l l l l l l l



em is a l l




High-
pressure gas High- l l




pressureliquidLow- l l




pressure gas l




Low-pressure liquid - ✔✔✔ Correct Answer > High-Pressure Liquid l l l l l l l l