Study guides, Class notes & Summaries

Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% CORRECT ANSWER C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40% C: 60% D: 80% CORRECT ANSWER C: 60% Today, furnaces with AFUE ratings greater than _____ are available. A: 85% B: 90% C: 100%

On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? CORRECT ANSWER 6-7PSI or 6F What is the primary purpose of using flux when soldering copper or brass parts? CORRECT ANSWER Prevent Oxidation The water that results from a defrost cycle of an air to air heat pump(runoff) must? CORRECT ANSWER Drain off and away from the outdoor coil. Why must the runoff be drained off and away from the outdoor coil? CORRECT ANSWER Exc...

NATE CORE STUDY GUIDE(correct answers)to passWhich of the following is not the product of incomplete combustion: Oxides of nitrogen An oil trap is required at the base of the discharge line of the vertical riser is _____ or above 8 feet A diode allows current to flow in one direction: True 1 Watt = _____ Btu 3.41 Current in a closed circuit is limited by which of the following: resistance An oil separator is located in the _____: Discharge line ___...

NATE Heat Pump Exam (Latest 2022 – 2023)

NATE Air Conditioning and Heat Pumps Exam Questions 2022/2023 | Consisting Of 50 Questions With Verified Answers From Experts

What governing body is responsible for the suspension of PT licenses? A) PT Board of California B) American Board of PT Specialties C) Federation of State Board of PT D) Institutional Review Board CORRECT ANSWER A) PT Board of California Which of the following conditions is an initial requirement in order to participate in an alcoholic diversion program? A) voluntary admission B) psych eval C) recommended by supervisor D) physician rx CORRECT ANSWER A) voluntary admission How ...

NATE Exam: Core Essentials Questions and Answers (Graded A) d (very important) - ANSWER-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

NATE Exam: Air Conditioning and Heat Pumps Questions with correct Answers Which of the following factors affects a customer's level of comfort? a. Air movement b. Humidity c. Temperature d. All of the above - ANSWER-d (All of the above: air movement, humidity, temperature)

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