Fuel metering systems Study guides, Class notes & Summaries

HVAC NATE Heat Pump Exam Questions With Correct Answers Updated 2024/2025 (Graded A+) What is the primary purpose of using flux when soldering copper or brass parts? -Ans Prevent Oxidation The water that results from a defrost cycle of an air to air heat pump(runoff) must? -Ans Drain off and away from the outdoor coil. Why must the runoff be drained off and away from the outdoor coil? -AnsExcessive ice can build up on the bottom of the coil and can reduce capacity. What is the component th...

HVAC II Final Exam Review| 50 Questions | Correct Answers IF a heat pump works normally in the heating mode but will not provide cooling or a defrost mode, which component is most likely defective? - ANSWER Reversing valve Air-to-air heat pumps produce heat by - ANSWER extracting heat from the outdoor air and transferring it to the indoor air In addition to the reversing valve, the other major difference between a heat pump and a cooling only system is - ANSWER heat pumps require two ...

NATE Heat Pump Exam Questions And Answers R-22 vapor line diameters and lengths are typically specified for a... - ANS Vapor pressure drop that does not exceed a 6-7 psi or 6 degrees F The primary purpose of using flux when soldering copper or brass parts is... - ANS To prevent oxidation The water that results from a defrost cycle of an air to air heat pump(runoff) must... - ANS Drain off and away fro the outdoor coil to prevent excessive ice build up on the bottom of the co...

What is the purpose of the reversing valve on an air-to-air heat pump: 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: the compressor discharge line On a reversing-valve solenoid, what is connected to the bottom center tube: the compressor suction line What pressure difference must be between the low side and the high side of the heat pump system for the...

NATE Heat Pump Exam Questions And Answers R-22 vapor line diameters and lengths are typically specified for a vapor pressure drop that does not exceed... - ANS 6-7 psi or 6°F The primary purpose of using flux when soldering copper or brass parts is to... - ANS Prevent oxidation The water that results from a defrost cycle of an air to air heat pump (runoff) must drain off and away from the outdoor coil to... - ANS Prevent excessive ice can build up on the bottom of the coil and red...

You are an external BA with a frequency bais of 20 MW/.1 Hz that sees a frequency of 60.02 due to a large loss of load in the contingent BA. If your generator governor control systems responded to the frequency deviation approximately how much of a generation change would you BA experience? -4MW Net actual interchange minus Net scheduled interchange is what? Inadvertent interchange Suppose your interconnection operators at 59.97 Hz from one minute after midnight to noon and operate a...

Which of the following factors affects a customer's level of comfort? a. Air movement b. Humidity c. Temperature d. All of the above - 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% - c (+15%) The maximum sensible cooling capacity of a heat pump shoul...

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

R-22 vapor line diameters and lengths are typically specified for a... Vapor pressure drop that does not exceed a 6-7psi or 6 degrees F The primary purpose of using flux when soldering copper or brass parts is... To prevent oxidation The water that results from a defrost cycle of an air to air heat pump(runoff) must... Drain off and away fro the outdoor coil to prevent excessive ice build up on the bottom of the coil and reduce capacity The component used to reduce sound ...

R-22 vapor line diameters and lengths are typically specified for a vapor pressure drop that does not exceed... 6-7 psi or 6°F The primary purpose of using flux when soldering copper or brass parts is to... Prevent oxidation The water that results from a defrost cycle of an air to air heat pump (runoff) must drain off and away from the outdoor coil to... Prevent excessive ice can build up on the bottom of the coil and reduce capacity The component used to reduce sound tr...