Hvacr unit 3 Study guides, Class notes & Summaries
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Nate Core Exam Study Guide with Questions and Correct Answers
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What are the five basic components to any schematic? - 1. A power supply 
2. A path for the power 
3. A load or component that operates from the power. 
4. A switch or component that interrupts the power to the load. 
5. A legend or key that explains what the various symbols and abbreviations used in the schematic mean. 
 
What are the three basic types of wiring diagrams used in the HVACR trade? - 1. The ladder diagram 
2. The pictorial diagram 
3. The installation diagram 
 
Describe the...
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Nate core exam Questions with 100% Correct Answers| Graded A+
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What are the five basic components to any schematic? 1. A power supply 
2. A path for the power 
3. A load or component that operates from the power. 
4. A switch or component that interrupts the power to the load. 
5. A legend or key that explains what the various symbols and abbreviations used in the 
schematic mean. 
What are the three basic types of wiring diagrams used in the HVACR trade? 1. The 
ladder diagram 
2. The pictorial diagram 
3. The installation diagram 
Describe the characteris...
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EPA 609 Certification Questions & Answers Accurate 100%
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An ----- should be taken and ----- if a system has a major component failure. - Answer oil sample 
analyzed 
 
(evacuation) The system vacuum gauge should be connected ----- from the vacuum pump. - Answer far as possible 
 
To receive any certification, which section must be passed? - Answer Section A (core) 
 
Always review the -----, when working with any solvents, chemicals, or refrigerants - Answer material safety data sheets 
 
Cylinders should be transported in an ----- position - Answer u...
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HVACR Package Deal With Verified Study Solutions (Questions And Answers) Rated A+
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HVACR Package Deal With Verified Study Solutions (Questions And Answers) Rated A+
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HVACR Unit 32 - Alternating Current Fundamentals With Questions And 100% All Sure Answers
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HVACR Unit 32 - Alternating Current Fundamentals With Questions And 100% All Sure Answers

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NATE CORE QUESTIONS WITH 100% CORRECT ANSWERS GRADED TO PASS
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In HVACR terms, what is a feature? - A special characteristic of a product. 
 
In HVACR terms, what is a benefit? - The value the customer receives from using the feature 
 
What type of temperature is often used by customers when discussing human comfort? - Dry bulb 
 
What is an honest person? - A person who is free from fraud or deception, credible, and is marked with integrity. An honest person is fair in their dealings with other people. 
 
What is the unit of electrical pressure? - Vo...
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NATE CORE EXAM QUESTIONS WITH COMPLETE SOLUTIONS RATED A+
- Exam (elaborations) • 13 pages • 2023
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What are the five basic components to any schematic? - 1. A power supply 
2. A path for the power 
3. A load or component that operates from the power. 
4. A switch or component that interrupts the power to the load. 
5. A legend or key that explains what the various symbols and abbreviations used in the schematic mean. 
 
What are the three basic types of wiring diagrams used in the HVACR trade? - 1. The ladder diagram 
2. The pictorial diagram 
3. The installation diagram 
 
Describe the cha...
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EPA 608 CORE QUESTIONS AND ANSWERS 2023
- Exam (elaborations) • 7 pages • 2023
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EPA 608 CORE QUESTIONS AND ANSWERS 2023 
what is CFCs? 
Chlorofluorocarbons (Chlorine, Fluorine, and carbon) 
 
 
 
What is HCFCs? 
Hydrochlorofluorocarbons (hydrogen, chlorine, fluorine, and carbon) 
 
 
 
What is ASHRAEs? 
The American Society of Heating Refrigerating and Airconditioning Engineers. A global professional association seeking to advance heating, ventilation, airconditioning and refrigeration systems. 
 
 
 
What is the greatest effect in the stratosphere? 
The greatest effect in ...
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NATE Exam: Core Essentials, questions and answers. Verified
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NATE Exam: Core Essentials, questions and answers. Verified 
d (very important) 
The ability to utilize all types of communication skills is ____ to the HVACR technician. 
 
a. not as important as "hands-on" technical skills 
b. somewhat important 
c. unimportant 
d. very important 
 
 
 
d (all of the above: clear, complete, concise) 
It is important to be ____ in filling out service orders so that office staff, other technicians, and customers will know what work you completed on the job. 
...
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EPA SECTION 608 CORE (2022 revision)
- Exam (elaborations) • 20 pages • 2022
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EPA SECTION 608 CORE (2022 revision) 
 
What does ozone in the stratosphere above the earth consist of? 
a. Molecules containing 2 oxygen atoms. 
b. Molecules containing 3 oxygen atoms. 
c. Molecules containing 4 oxygen atoms. 
d. Molecules containing 5 oxygen atoms 
 
Which of the following refrigerants has the lowest global warming potential? 
a. R-134a 
b. R-407C 
c. R-410A 
d. R-600a 
 
Which of the following gases is used as the baseline 
measurement for global warming potential? 
a. Ammo...
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