Download Epa universal SkillCat exam questions with answers and more Exams Environmental Management in PDF only on Docsity!
Epa universal SkillCat exam questions
with answers
As technicians we must stay up to date on - CORRECT ANSWERS ✔✔Federal state and local law For universal certification you will receive how many questions - CORRECT ANSWERS ✔✔ 100 What is passing grade for all epa certifications - CORRECT ANSWERS ✔✔70% True or false you must memorize all regulations because they will stay the same forever - CORRECT ANSWERS ✔✔False Can chlorine from the environment come from natural resources such as volcanoes - CORRECT ANSWERS ✔✔Yes but they are not the primary source True or false Ground level ozone is is what reflects and absorbs harmful uv rays from the sun - CORRECT ANSWERS ✔✔False
In which way does ozone depletion affect humans - CORRECT ANSWERS ✔✔Increased risk of skin cancer and cataracts Is there evidence that refrigerants are in the stratosphere - CORRECT ANSWERS ✔✔Yes One molecule of chlorine can destroy how many molecules of ozone - CORRECT ANSWERS ✔✔100, Ozone has ____ oxygen atoms. - CORRECT ANSWERS ✔✔ 3 True or false the majority of the ozone is located in the troposphere - CORRECT ANSWERS ✔✔False How many molecules of ozone can three molecules of chlorine destroy
- CORRECT ANSWERS ✔✔300, What is the major function of ozone in the stratosphere - CORRECT ANSWERS ✔✔Absorb and reflect uv rays from the sun What is the primary source of Chlorine in the stratosphere - CORRECT ANSWERS ✔✔Emissions of refrigerants by human like cfc and hcfc
Equipment has to be certified to epa standards in order to recover which refrigerants - CORRECT ANSWERS ✔✔Cfc hcfc hfc If you are selling r 22 refrigerant who can you sell to - CORRECT ANSWERS ✔✔A technician or business with an epa 608 If you recover r 22 can you use the recovered refrigerant in another device owned by a different person - CORRECT ANSWERS ✔✔Yes but only if it is reclaimed and meets ahri 700 standards In the United States when we're all CFCs phased out - CORRECT ANSWERS ✔✔ 1995 In the United States when we're r22 r124b phased out - CORRECT ANSWERS ✔✔ 2020 In the United States when will all HCFCS be phased out - CORRECT ANSWERS ✔✔ 2030 What records should be kept for r22 - CORRECT ANSWERS ✔✔Type of refrigerant, dates and quantity of refrigerant Section 608 of EPA Clean Air Act is - CORRECT ANSWERS ✔✔Federal law
State and local regulations - CORRECT ANSWERS ✔✔Have to be followed with federal law and may be stricter The venting prohibition requires that you recover affected refrigerant before - CORRECT ANSWERS ✔✔Opening, servicing, disposing equipment Under section 608 regulations who is responsible for ensuring that all refrigerant is removed before disposing of equipment that contains refrigerant - CORRECT ANSWERS ✔✔final person in the disposal chain What appliances do section 608 regulations apply to - CORRECT ANSWERS ✔✔Freezers What does snap stand for - CORRECT ANSWERS ✔✔Significant New Alternatives Policy What is the fine for violating the clean air act - CORRECT ANSWERS ✔✔44539 per day per violation What is the Montreal Protocol? - CORRECT ANSWERS ✔✔An international agreement between 197 countries
Example of refrigerant excluded from section 608 refrigerant management requirements - CORRECT ANSWERS ✔✔Water, nitrogen, carbon dioxide Examples of violation of the CAA venting prohibition - CORRECT ANSWERS ✔✔Release of refrigerants because appliances were not recovered and refrigerants release when disconnecting non low loss fittings What does section 608 regulations apply to - CORRECT ANSWERS ✔✔CFC,HCFC,HFC Example of refrigerant that you don't need section 608 to purchase - CORRECT ANSWERS ✔✔Nitrogen Examples of CFC - CORRECT ANSWERS ✔✔R11,r Refrigerant Example of HCFC - CORRECT ANSWERS ✔✔R Refrigerant examples the venting prohibition cover - CORRECT ANSWERS ✔✔CFC,HCFC,HFC Which organization can test your recovery equipment used to service a system with r12 - CORRECT ANSWERS ✔✔UL, AHRI
Who does not need to maintain proper records of refrigerant - CORRECT ANSWERS ✔✔The epa You must have a section 608 certification in order to purchase - CORRECT ANSWERS ✔✔CFC, HCFC, HFC true of false Equipment that uses nitrogen as a refrigerant is not subject to section 608 - CORRECT ANSWERS ✔✔True After the evaporator which component does the refrigerant go to next
- CORRECT ANSWERS ✔✔Compressor As the temperature of a liquid increases what phase does it turn into - CORRECT ANSWERS ✔✔Vapor Does the refrigerant change state in the compressor - CORRECT ANSWERS ✔✔No If we increase pressure acting on a liquid what state can the substance change to - CORRECT ANSWERS ✔✔Solid
When the refrigerant enters the compressor what state is it in - CORRECT ANSWERS ✔✔Super heated vapor When refrigerant enters the evaporator what state is it in - CORRECT ANSWERS ✔✔Liquid When refrigerant exits the evaporator what state is it in - CORRECT ANSWERS ✔✔Low pressure Vapor Which components are on the high pressure side - CORRECT ANSWERS ✔✔Compressor, condenser What components change the refrigerants pressure - CORRECT ANSWERS ✔✔Compressor, metering device What state has the highest temperature solid liquid water vapor - CORRECT ANSWERS ✔✔Vapor True or false molecules in a vapor state is faster than a liquid state - CORRECT ANSWERS ✔✔True If we decrease the pressure of a substance it's boiling point decreases - CORRECT ANSWERS ✔✔True
In the condenser the refrigerant changes state - CORRECT ANSWERS ✔✔True True or false The boiling point for most refrigerants is 212fheight - CORRECT ANSWERS ✔✔False True or false The vapor leaving the compressor is lower in pressure than vapor entering the compressor - CORRECT ANSWERS ✔✔False Your air conditioning works by adding cold air into your house - CORRECT ANSWERS ✔✔False What is fractionation - CORRECT ANSWERS ✔✔When refrigerant settles into layers happens in vapor phase Temperature glide is - CORRECT ANSWERS ✔✔The difference between the bubble and dew point The bubble point is - CORRECT ANSWERS ✔✔The temperature that the first refrigerant in a blend turns into vapor The dew point is - CORRECT ANSWERS ✔✔The temperature that the first refrigerant in a blend turns to liquid
True or false Refrigerant blends take on the ashrae number of the main refrigerant blend - CORRECT ANSWERS ✔✔False true or false Technicians can make their own epa approved refrigerant blends - CORRECT ANSWERS ✔✔False True or False there are no drop in replacements for r22 - CORRECT ANSWERS ✔✔True True or False there are no replacements for r22 refrigerant - CORRECT ANSWERS ✔✔False Alkylbenzene (AB) oil is used for systems with which of the following refrigerants - CORRECT ANSWERS ✔✔HCFC, HCFC blends Hygroscopic oils - CORRECT ANSWERS ✔✔Absorb moisture readily If we are retrofitting a system to use r134a which oil do you need to use - CORRECT ANSWERS ✔✔Polyester POE True or false R1234yf is not miscible in any refrigerant oils - CORRECT ANSWERS ✔✔False
True or false Alkylbenzene (AB oil) is miscible in HCFC refrigerant - CORRECT ANSWERS ✔✔True True or false An ideal oil is best at handling high temperatures and high pressures - CORRECT ANSWERS ✔✔False True or false an Ideal oil is readily miscible with the refrigerant in the system - CORRECT ANSWERS ✔✔True True or false As long as an oil is not flammable at the starting and ending temperature it can be used because the system is contained - CORRECT ANSWERS ✔✔False True or false Hydrolysis is when refrigerant oil breaks in the presence of water - CORRECT ANSWERS ✔✔True True or false Polyester oils are great because they can mix with a lot of other oils - CORRECT ANSWERS ✔✔False What are the most common ways leaks can occur - CORRECT ANSWERS ✔✔Wear and tear, poor initial construction Common leak locations are - CORRECT ANSWERS ✔✔Coils, valve connections, pipe connections
If a household freezer contains r22 we can retrofit it to operate on - CORRECT ANSWERS ✔✔R410a If we find refrigerant that is mixed what must we do - CORRECT ANSWERS ✔✔Send it to a certified reclaiming facility to try to reclaim it If we use nitrogen to pressurize a system or blow debris out we can - CORRECT ANSWERS ✔✔Vent the nitrogen Isobutane is - CORRECT ANSWERS ✔✔An acceptable substitute for all new household refrigerators and freezers New household refrigerators and freezers can be factory charged with
- CORRECT ANSWERS ✔✔R600a,r Small appliances include - CORRECT ANSWERS ✔✔Window ac units How many pounds of refrigerant can type 1 appliances contain - CORRECT ANSWERS ✔✔ 5 Which of the following refrigerant is not covered by the sale restriction of section 608 - CORRECT ANSWERS ✔✔R
Which refrigerants can be vented - CORRECT ANSWERS ✔✔R ammonia r744 carbon dioxide r28 nitrogen True or false Do you expect to see r22 listed as an acceptance substitute under the snap program - CORRECT ANSWERS ✔✔False the purpose of snap is to replace harmful refrigerants True or false for r22 there are no drop in substitutes - CORRECT ANSWERS ✔✔True How many ounces are in a pound? - CORRECT ANSWERS ✔✔16 ounces True or false if we have two HFC refrigerants we can use the same recovery cylinder because they are the same type of refrigerant - CORRECT ANSWERS ✔✔False True of false Nitrogen can be used to pressurize or blow debris out of a system containing a half charge of refrigerant - CORRECT ANSWERS ✔✔False True or False only refrigerant blends without HFCs are accepted under the snap program - CORRECT ANSWERS ✔✔False
If the compressor is not working and we are performing passive recovery we need to - CORRECT ANSWERS ✔✔Release trapped refrigerant from the compressor oil If the pressure of a system is found at 0psi can we recover refrigerant from the system - CORRECT ANSWERS ✔✔No True or false if pressure reading are far apart are there contaminants in the refrigerant - CORRECT ANSWERS ✔✔True Solderless piercing valves tend to - CORRECT ANSWERS ✔✔Leak over time and should not be left on an appliance after service System dependent recovery - CORRECT ANSWERS ✔✔Is passive uses the compressor and can be used for appliances with under 15 lbs of refrigerant We can use a known refrigerants PT chart to see if there's non condensables in the refrigerant - CORRECT ANSWERS ✔✔Only true if we can measure both pressure and temperature When performing active recovery and the compressor is working we must recover what levels - CORRECT ANSWERS ✔✔90% or 4 inch vacuum
What method of monitoring fill levels is most effective - CORRECT ANSWERS ✔✔Gross cylinder weight A recovery machine is required for appliances with _ lbs or more of refrigerant - CORRECT ANSWERS ✔✔15 lbs If the oil is contaminated what do we do - CORRECT ANSWERS ✔✔Flush the system Non-condensables would _ the pressure on the high side of an active recovery device - CORRECT ANSWERS ✔✔Increase Recovery devices are tested and certified by - CORRECT ANSWERS ✔✔AHRI UL Vacuum pumps can be used to - CORRECT ANSWERS ✔✔Remove air and non condensables What are signs of contamination - CORRECT ANSWERS ✔✔Discolored oil acidic smell What does the process stud look like in small appliances - CORRECT ANSWERS ✔✔A straight piece of tubing
