NATE/HVAC|North American Technician Excellence| Exam Bundle Pack

Low airflow over a residential split system air conditioning evaporator can cause A: Liquid flood-back to the compressor B: A decrease in compression ratio C: An increase in suction line superheat D: Oil logging in the evaporator CORRECT ANSWER A: Liquid flood-back to the compress...

Ch. 1-1 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 CORRECT ANSWER d) very important Ch. 1-2 It is important to be _______ in filling ...

Which of the following factors affects a customer's level of comfort? a. Air movement b. Humidity c. Temperature d. All of the above CORRECT ANSWER d (All of the above: air movement, humidity, temperature) A cooling load calculation estimates the sensible heat gain of a structure. The maxi...

Charging a heat pump with refrigerant is best accomplished in the _______ mode. A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode CORRECT ANSWER B: Cooling mode Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is th...

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...

Generally, vibration eliminators in piping should be installed: A: At a 45-degree angle B: At a 90-degree angle C: Perpendicular to the compressor crankshaft D: Parallel to the compressor crankshaft CORRECT ANSWER D: Parallel to the compressor crankshaft If you purchased ten filt...

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 ...

What precautions are required when mounting any gas furnace on a wood platform in an attic? CORRECT ANSWER None The gas control valve may be damaged if exposed to an inlet pressure above what? CORRECT ANSWER 14 inch W.C. How many elbows and joints should a vent connector have? CORRECT ANSWER A...