In a hfc Samenvattingen, Aantekeningen en Examens
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![Spectrum Field Tech Questions and Answers 100% Pass](/docpics/642dff9230d5c_2558933.jpg)
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Spectrum Field Tech Questions and Answers 100% Pass
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Spectrum Field Tech Questions and Answers 100% Pass Current/ amperage Flow or movement of electric charges 
Resistor a passive two-terminal material that impedes the flow of current 
What is the most common workplace hazard involving electricity? Electrical shocks 
What is minimum approach distance? The shortest safe distance to keep from energized conductors 
CATV at the pole 40'' 
CATV at the mid-span 24'' 
CATV at the house 12'' 
Live parts of electric equipment must be guarded against ...
![EPA 608 CORE Exam Questions and Answers (2022/2023) (Verified Answers) Graded A+](/docpics/639c2f2291163_2183574.jpg)
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EPA 608 CORE Exam Questions and Answers (2022/2023) (Verified Answers) Graded A+
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EPA 608 CORE Exam Questions and Answers (2022/2023) 
(Verified Answers) Graded A+ 
What characteristic or characteristics of CFCs make them more likely than other 
chlorine compounds to reach the stratosphere? Dont disolve iin water 
Each chlorine atom in the stratosphere can destroy how many ozone molecules? 
100,000 ozone molecules 
Which refrigerant contains a CFC? 
R500, R12, R113 or R11? Theyre all CFC's 
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? Hydrogen, 
chlorine, flouri...
![UPDATED EPA 608 QUIZLET (2023) questions with correct answers](/docpics/2945550/6494416d503e5_2945550_121_171.jpeg)
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UPDATED EPA 608 QUIZLET (2023) questions with correct answers
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the state of the refrigerant entering the metering device is? - Answer A subcooled high pressure liquid. 
 
what type of refrigerant is used in VERY high-pressure appliances? - Answer R-503 
 
what type of refrigerant is used in MEDIUM pressure appliances? - Answer R-500 
 
what type of refrigerant is used in HIGH pressure appliances? - Answer R-410A and R-22 
 
what device is located at the END of the liquid line? - Answer The expansion device. 
 
what type of refrigerants are the LEA...
![MACS 609 CERTIFICATION EXAM QUESTIONS & ANSWERS CORRECT 100%](/docpics/3646798/652fe61cdecee_3646798_121_171.jpeg)
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MACS 609 CERTIFICATION EXAM QUESTIONS & ANSWERS CORRECT 100%
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If lubricant is removed by recovery equipment during system refrigerant removal, what must be done with the lubricant? - Answer Re-install lubricant removed by the recovery equipment 
 
Before reuse, what must be done with HFC-134a that has been recovered from a mobile A/C system using recovery-only equipment? - Answer Question 2 options: 
Recycle the HFC-134a before reuse using certified equipment 
 
When can HFC-134a become combustible in a mobile air conditioning system? - Answer If shop air ...
![(Answered) EPA SECTION 608 CORE (2021-2022 revision)](/docpics/638d2d42da532_2155145.jpg)
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(Answered) EPA SECTION 608 CORE (2021-2022 revision)
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EPA SECTION 608 CORE (2021-2022 revision) 
A disposable cylinder should be reduced to what pressure before scrapping? 
a. 0 psig 
b. 20 psig 
c. 50 psig 
d. 80 psig 
 
A major system repair is being performed on a R-22 appliance. What CANNOT be done to recharge the appliance? 
a. Add R-22 after the repair is complete. 
b. Retrofit the unit to R-407C. 
c. Use recovered or recycled R-22 from the same 
owner. 
d. Top off the unit with R-410a. 
A refillable cylinder must not be filled above what ...
![EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution.](/docpics/2763239/6465101f89608_2763239_121_171.jpeg)
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EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution.
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EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution. 
As of what date did it become unlawful to release Class 1 and Class II 
refrigerants to the atmosphere? 
a. July 1, 1992 
b. July 1, 1993 
c. November 14, 1994 
d. January 1, 1996 Ans a. July 1, 1992 
What is the ozone layer and why is it important to us on Earth? 
a. Thin layer of R-22 in the atmosphere that filters UV. 
b. Protective shield for Earth from the sun's harmful ultraviolent (UV) 
rays in the strato...
![ODP test Questions and Answers 2023](/docpics/3120134/64be597e22a51_3120134_121_171.jpeg)
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ODP test Questions and Answers 2023
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ODP test Questions and Answers 2023 
Chlorofluorocarbon (CFC) refrigerants consist of: 
Chlorine, Fluorine, Carbon 
 
 
 
What causes a CFC molecule to break down once it reaches the upper atmosphere? 
Ultraviolet light 
 
 
 
The Ozone layer: 
Reduces ultraviolet radiation. 
 
 
 
Hydrochlorofluorocarbon (HCFC) refrigerants consists of: 
Hydrogen, Chlorine, Fluorine, Carbon. 
 
 
 
Which of the following refrigerants causes the least amount of damage to the ozone layer? 
R-134a 
 
 
 
Are there...
![NCTI Final Exam: Progression Field Tech 2- 3 Exam| New Update 2023/ 2024|Verified Questions and Answers](/docpics/2852035/647ce594d45a0_2852035_121_171.jpeg)
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NCTI Final Exam: Progression Field Tech 2- 3 Exam| New Update 2023/ 2024|Verified Questions and Answers
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NCTI Final Exam: Progression Field Tech 2- 3 Exam| New Update 2023/ 2024|Verified Questions and Answers 
 
1.	What would be the downstream throughput if two QAM channels with a throughput of 38 Mbps were bonded? 
 
 
	Answer: 76 Mbps. 
 
 
 
2.	What are two features that were added in DOCSIS 3.1 to extend the viability of HFC networks into the next decade? 
 
 
	Answer: OFDM and LDPC. 
 
 
 
3.	Which step in the troubleshooting process requires a discussion with the customer to gather more...
![ASE AC 609 Question and answers 2023](/docpics/6438706686b5b_2593322.jpg)
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ASE AC 609 Question and answers 2023
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ASE AC 609 Question and answers 2023Ozone Depletion Potential - correct answers chemical rating that ranges from 0.01-1.0 and that refers to the amount of ozone depletion caused by a substance compared to CFC-11 (eg HCFC-22 depletes .034 of the ozone where CFC-11 would deplete 1.0) 
 
class 1 substance - correct answers ozone depleting chemical with an ozone depletion potential greater than .2 (eg CFCs)HCFCs - correct answers Hydrochlorofluorocarbons, eg R-22 (HCFC-22) 
 
HFCs - correct...
![EPA 608 Exam Practice Questions 1-100](/docpics/6389290d8bade_2148619.jpg)
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EPA 608 Exam Practice Questions 1-100
- Tentamen (uitwerkingen) • 39 pagina's • 2022
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EPA 608 Exam Practice Questions 1-100EPA 608 Exam Practice Questions 1-100 
Ozone depletion is caused by _______ in HFC refrigerants. - Answer chlorine 
CFCs and HCFCs ________ making them capable capable of reaching the 
stratospheric ozone layer. - Answer do not dissolve in water or easily break down in the 
atmosphere 
According to the Rolanda-Molina theory, ________ are destroyed by each chlorine 
atom in the stratosphere. - Answer 100,000 ozone molecules 
The stratospheric ozone layer prote...
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