Nate heat pumps exam q - Study guides, Class notes & Summaries

NATE Exam: Air Conditioning and Heat Pumps/ 95 Q&A/ . Terms like: 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) A cooling load calculation estimates the sensible heat gain of a structure. The maximum sensible capacity of a cooling-only system should be within ____% of this calculated value. a. ±10% b. +10% c. +15% d. +30...

NATE Exam: Air Conditioning and Heat Pumps/ 95 Q&A/ . The three processes that transfer heat energy are conduction, convection, and ____. a. concentration b. radiation c. refraction d. static pressure - Answer: b (radiation) Heat transfer that occurs when substances of different temperatures are in contact with each other is called ____. a. concentration b. conduction c. convection d. radiation - Answer: b (conduction) What effect does raising the pressure in a sealed system h...

NATE Heat Pumps Exam Questions and Correct Answers What is the purpose of the reversing valve on an air-to-air heat pump: - ANSWER It changes the flow of the refrigerant, making the indoor coil the condenser during the winter months On a reversing-valve solenoid, what is connected to the top tube: - ANSWER the compressor discharge line On a reversing-valve solenoid, what is connected to the bottom center tube: - ANSWER the compressor suction line What pressur...

NATE Heat Pumps Exam Questions with Complete Answers

NATE Heat Pumps Exam Questions with Complete Answers

The NATE Industry Competency Exam: Heat Pumps Q&A A correct statement regarding the outdoor coil of a heat pump is that damage may result if the: a. Indoor blower fails to operate. b. Defrost water does not drain from the coil. c. Indoor check valve sticks. d. Outdoor metering device sticks open. - CORRECT ANSWER-B If this unit is installed on 208 volts, the transformer primary should be wired: a. To the black and red leads of the transformer. b. To the black and orange leads of the...

NATE Heat Pumps Exam Questions with Complete Answers

NATE Exam: Air Conditioning and Heat Pumps/ 95 Q&A/ . Terms like: Heat transfer that occurs when substances of different temperatures are in contact with each other is called ____. a. concentration b. conduction c. convection d. radiation - Answer: b (conduction) What effect does raising the pressure in a sealed system have on refrigerant? a. It becomes more difficult to subcool the liquid refrigerant b. It becomes more difficult to superheat the refrigerant vapor c. The refrig...