Hvac r - Study guides, Class notes & Summaries

True - ANSWER Copper wire bend easily, has good mechanical strength, resists corrosion, and can be easily joined. True - ANSWER Aluminum is a good conductor of electricity, however, it has a tendency to corrode. False - ANSWER Voltage drop in a conductor is of least importance when sizing wire. False - ANSWER The maximum recommended voltage drop for a branch circuit is eight percent. False - ANSWER The allowable voltage drop of most manufacturers is 15% below the nameplate rating. ...

CDC 3E151: Volume 3. HVAC/R Fundamentals (LATEST) 2024 QUESTIONS & ANSWERS!!

HVAC NATE Heat Pump|171 Questions with Correct Answers| Verified 2024 On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? - ANSWER-6-7PSI or 6F

HVAC-R FINAL EXAM QUESTIONS HVAC-R FINAL EXAM QUESTIONS|VERIFIED WITH ACCURATE ANSWERS Volt amps - Accurate AnswerTransformers are normally rated in? True - Accurate AnswerAn insulated jumper may be used to temporarily jump a component in an electrical circuit(true or false)? Divided by 10 - Accurate AnswerWhen using a 10 wrap multiplier the reading on the meter must be? Ladder diagram - Accurate AnswerAn electrical line wiring diagram is often called? Pictorial diagram - Accu...

HVAC-R PASSED Exam Questions and CORRECT Answers cold - Ans The absence of heat sensible heat - Ans The heat that can be measured with a thermometer. Heat energy that changes the temperature of a substance without changing its state. latent heat of fusion - Ans The heat required to change a solid to a liquid or vice versa at the same temperature, expressed in Btu per pound

R-12 is a _______________ type of refrigerant CFC Section 608 HVAC/R Technicians cannot buy refrigerant in quantities less than ________________ 20 LBS According to ____________ service shops must certify to the EPA that they own approved recovery. CAA Skin or eye contact with fluorocarbon refrigerants can result in IRRITATION, FROSTBITE, DEATH T/F Refrigerant are lighter than air: FALSE Which of the following refrigerants has minimum or zero ozone depletion potential: ...

HVAC-R Mid-term Review 2024 Questions & Answers Rated A+

HVAC Refrigeration Final Practice Exam Questions and Answers 100% Pass Temperature - Correct Answer ️️ -Levels of heat, the speed of molecules are traveling British thermal unit - Correct Answer ️️ -Amount of heat To raise the temperature of 1 lbs of water 1 degree F Heat flow - Correct Answer ️️ -Transfer from hot to cold Conduction of heat - Correct Answer ️️ -Heat transfer from one molecule to another within a substance or both substances are in contact with touching C...

HVAC Gas Heat Certification Exam (New 2024/ 2025 Update) Questions and Verified Answers 100% Correct | A Grade QUESTION Duct wrap is used to insulate round metal ducts. What is the approximate R-value for "one inch" of this insulation Answer: R= 3.0 QUESTION A category 1 natural gas furnace has a typical air temperature rise of Answer: 60°F - 120°F QUESTION A technician connects the electrical circuit to an 80,000 BTU gas furnace with a 3- ton ...

HVAC-R TEST: BASIC SCIENCE & A2L'S