Nate controls exam - Study guides, Class notes & Summaries

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated (GRADED A+) The maximum sensible cooling capacity of a heat pump should be within ______% of the calculated sensible heat gain of a structure with a large heating load. - ANSWER- +25% The combined output of a heatpump and its auxiliary heat should not exceed the calculated heat loss of a home by more than ____%. - ANSWER-15% What amount of auxiliary electronic heat is needed when the output of a heat pump on a design d...

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated 2024/2025 (GRADED) The combined output of a heatpump and its auxiliary heat should not exceed the calculated heat loss of a home by more than ____%. - ANSWER-15% What amount of auxiliary electronic heat is needed when the output of a heat pump on a design day equals 18,800 Btuh and the heat loss of a home is 29,700 Btuh? - ANSWER-3.2 kWh The three processes that transfer heat energy are conduction, convection, and _____...

NATE A/C Exam #1 Questions And Answers 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 - ANS A: Liquid flood-back to the compressor Which of the following is the correct sequence of work? A: Attach gauge manifold, recover refrigerant, replace filter core, evacuate the system, recharge...

Nate Electrical Exam Question and answers rated A+ 2024 What electro-mechanical control would you use on a cap tube or automatic expansion valve system to maintain the space temperature? - correct answer C: A thermostatic control Open motors are designed to operate at a given temperature rise as indicated on the motor nameplate. What does this mean? - correct answer A: indicates the temp. rise over the surrounding air of a motor when the motor is operating at full-load conditions A v...

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated (GRADED A+) The maximum sensible cooling capacity of a heat pump should be within ______% of the calculated sensible heat gain of a structure with a large heating load. - ANSWER- +25% The combined output of a heatpump and its auxiliary heat should not exceed the calculated heat loss of a home by more than ____%. - ANSWER-15% What amount of auxiliary electronic heat is needed when the output of a heat pump on a design d...

NATE Air Conditioning and Heat Pump Exam Questions and Answers Updated (GRADED A+) Which of the following factors affects a customers level of comfort? - ANSWER-All of the above A cooling load calculation estimates the sensible heat gain of the structure. The coolingonly system should be within _____% of this calculated value. - ANSWER-+15% The maximum sensible cooling capacity of a heat pump should be within ______% of the calculated sensible heat gain of a structure with a large heating l...

A fuse is used in an electrical circuit to - Answer: Protect the circuit wires from an overcurrent condition How are fuses rated - Answer: In amps with a maximum voltage rating What will an ohmmeter measure when testing an open fuse - Answer: Infinite resistance What type of sensing element is commonly found in fan and limit controls - Answer: Bimetal What is used to sense space temperature in electronic temperature controls - Answer: Thermistors What is known about a liquid-...

NATE Industry Competency Exam: Commercial Refrigeration 2023 Questions and Answers with complete verified solutions 100% solutions With the condensing pressure and compressor speed remaining constant, a decrease in suction pressure will cause a(n): a. Decrease in compressor capacity and decrease in current. b. Increase in compressor capacity and decrease in current. c. Increase in compressor capacity and increase in current. d. Decrease in compressor capacity and increase in current. -...

NATE Industry Competency Exam: Commercial Refrigeration Questions With Complete Solutions With the condensing pressure and compressor speed remaining constant, a decrease in suction pressure will cause a(n): a. Decrease in compressor capacity and decrease in current. b. Increase in compressor capacity and decrease in current. c. Increase in compressor capacity and increase in current. d. Decrease in compressor capacity and increase in current. - Answer D An indication of non-condensa...