Tentamen (uitwerkingen)
EPA 608 UNIVERSAL EXAM REVIEW Q&A
- Vak
- Instelling
EPA 608 UNIVERSAL EXAM REVIEW Q&A
[Meer zien]Voorbeeld 2 van de 11 pagina's
Voorbeeld 2 van de 11 pagina's
In winkelwagen
In winkelwagen
gesponsord bericht van onze partner
Verkoper
Volgen
biggdreamer
Ontvangen beoordelingen
Voorbeeld van de inhoud
EPA 608 UNIVERSAL EXAM REVIEWQ&A
Refrigeration technicians who violate the Clean Air Act can: - - Answer-Lose their EPA
certification, be fined, be required to appear in Federal court.
After 1995, any supplies of CFC refrigerants to service existing units in the USA can
only come from: - - Answer-recovery and recycling.
Refrigerant that is recovered can be returned to: - - Answer-the same system or other
systems owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: - . - Answer-has been chemically
analyzed and the refrigerant meets the ARI-700 standard.
The EPA can require a technician to demonstrate their ability to perform proper
procedures for recovering and/or recycling refrigerant. Failure to demonstrate
competency can result in: - - Answer-revocation of the technicians certification.
What characteristic(s) of CFCs make them more likely to reach the stratosphere than
most other compounds containing chlorine? - - Answer-Refrigerants that contain
chlorine but not hydrogen are so stable that they do not break down in the lower
atmosphere after being released. The chlorine or bromine reacts with the ozone,
causing it to change back to oxygen, thus destroying the ozone layer.
A system is considered dehydrated when: - - Answer-the vacuum indicator shows you
have reached and held the required finished vacuum.
Disposable refrigerant containers are used for ______ - Answer-virgin refrigerant
Which refrigerant is an HCFC? - - Answer-R-123, R-124, R-22
What statement is true about an azeotropic refrigerant mixture? - - Answer-It is a
mixture that acts like a single-component refrigerant over its entire range.
Chlorofluorocarbos (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the
following in common? - - Answer-It is a mixture that acts like a single-component
refrigerant over its entire range.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at
least: - - Answer-0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure gauge
is color coded: - Red. - Answer-
, In general, blended refrigerants should be charged: - - Answer-as a liquid.
Blended refrigerants leak from a system: - - Answer-in uneven amounts due to different
vapor pressures.
Which of the following gases help form the earth's protective shield? - Stratospheric
Ozone - Answer-
In a refrigerant system, the device that changes a low pressure vapor to a high pressure
vapor is the: - compressor. - Answer-
Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from
natural sources such as volcanoes because: - The rise in the amount of chlorine in the
stratosphere matches the rise in the amount of fluorine, which has different natural
sources than chlorine; The rise in the amount of chlorine in the stratosphere matches
the rise in CFC emissions; Air samples taken from the stratosphere over erupting
volcanoes show that volcanoes contribute a small quantity of chlorine to the
stratosphere when compared to CFCs; - Answer-
Which atom of the CFC molecule causes ozone depletion? - chlorine - Answer-
The ozone layer protects the earth from: - ultraviolet radiation from the sun. - Answer-
When using with any solvent, cleaner, chemical or refrigerant, you should review: -
material safety data sheets. - Answer-
An award of up to what amount may be paid to a person supplying information that
leads to a penalty against a technician who is intentionally venting? - 10,000 - Answer-
The Montreal Protocol is: - a treaty among nations that controls production of CFCs and
HCFCs. - Answer-
Which refrigerant is an HCFC? - R-123, R-22, R-124 - Answer-
What is one of the most serious results of damage to the ozone layer? - increases in
human skin cancer - Answer-
Of the refrigerants listed below, which has the lowest ozone depletion potential (ODP)?
- R-22 - Answer-
To determine the maximum allowable pressure to use when checking a system, check:
- the design pressure on the equipment nameplate - Answer-
Ozone depletion potential, or "ODP," is: - A measure of the ability of CFCs and HCFCs
to destroy ozone. - Answer-
Dit zijn jouw voordelen als je samenvattingen koopt bij Stuvia:
Bewezen kwaliteit door reviews
Studenten hebben al meer dan 850.000 samenvattingen beoordeeld. Zo weet jij zeker dat je de beste keuze maakt!
In een paar klikken geregeld
Geen gedoe — betaal gewoon eenmalig met iDeal, creditcard of je Stuvia-tegoed en je bent klaar. Geen abonnement nodig.
Direct to-the-point
Studenten maken samenvattingen voor studenten. Dat betekent: actuele inhoud waar jij écht wat aan hebt. Geen overbodige details!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper biggdreamer. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €15,26. Je zit daarna nergens aan vast.
Is Stuvia te vertrouwen?
4,6 sterren op Google & Trustpilot (+1000 reviews)
Afgelopen 30 dagen zijn er 69252 samenvattingen verkocht
Opgericht in 2010, al 15 jaar dé plek om samenvattingen te kopen