NATE Final Exam #1, Exams of Nursing

Download NATE Final Exam #1 and more Exams Nursing in PDF only on Docsity! 1 [Date] NATE Final Exam #1 | 50 Questions with 100% Correct Answers.Latest Update 2023. 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 - ✅✅✅D: Parallel to the compressor crankshaft If you purchased ten filter-driers for $100.00, what was the price of each filter- drier? A: $100.00 B: $10.00 C: $1.00 D: $1.10 - ✅✅✅B: $10.00 2 [Date] Which of the following jobs requires safety glasses? A: Driving a vehicle B: Extending a ladder C: Brazing D: Pulling thermostat wire - ✅✅✅C: Brazing Which of the following instruments would typically be used to measure a vacuum? A: Micron gauge B: Thermostat C: Anemometer D: Differential pressure gauge - ✅✅✅A: Micron gauge ASHRAE Standard 34 deals with: A: Carbon monoxide safety levels 5 [Date] An outdoor air conditioning condensing unit should not be located: A: Under an overhang where water may drain onto it B: Within 4 feet of a hose bib connection C: Within 3 feet of an electrical disconnect D: All of the above - ✅✅✅A: Under an overhang where water may drain onto it A thermostat should be mounted: A: Approximately 5 feet above the floor B: Level C: On an inside wall D: All of the above - ✅✅✅D: All of the above As the pressure on a liquid rises, the temperature at which the liquid will boil: A: Varies 6 [Date] B: Remains the same C: Increases D: Decreases - ✅✅✅C: Increases A voltmeter is connected to a circuit: A: In series B: In parallel C: Crossover D: Delta - ✅✅✅B: In parallel Pressure relief valves are not to be piped: A: In parallel B: In series C: Facing up D: Within 12" of a wall - ✅✅✅B: In series 7 [Date] Which of the following is typically covered by local codes? A: Refrigerant type B: Maximum length of refrigerant lines C: Location of condensing unit disconnect D: Location of liquid and suction line service valves - ✅✅✅C: Location of condensing unit disconnect Hard drawn ACR tubing may not be used: A: In combination with soft drawn ACR tubing B: Without first annealing the tubing C: With a swedge joint D: On residential applications - ✅✅✅C: With a swedge joint Which of the following oils is the most hygroscopic? A: POE oil 10 [Date] ACR soft copper tubing comes in: A: 20 foot lengths B: 30 foot sealed rolls C: 50 foot rolls D: 50 foot sealed rolls - ✅✅✅D: 50 foot sealed rolls Typical ACR copper tubing flares are: A: Double flares B: 33 degree flares C: 45 degree flares D: 60 degree flares - ✅✅✅C: 45 degree flares Customers generally trust technicians who: A: Look them straight in the eye during conversations 11 [Date] B: Genuinely listen to the customer's concerns C: Provide them with accurate information and options D: All of the above are correct - ✅✅✅D: All of the above are correct What amount of oxygen is normally contained in air? A: 10% B: 15% C: 21% D: 25% - ✅✅✅C: 21% The "critical temperature" and pressure of a refrigerant is: A: The conditions above which a refrigerant gas cannot be condensed into a liquid B: The conditions below which a refrigerant cannot be vaporized to a gas C: The conditions where even if a change of state were to occur, no latent heat exists D: The pressure at which no heat exists in the refrigerant therefore the temperature is absolute zero - ✅✅✅A: The conditions above which a refrigerant gas cannot be condensed into a liquid 12 [Date] Refrigerant cylinders should never be filled to over: A: 50% B: 65% C: 80% D: 90% - ✅✅✅C: 80% Which of the following gases should never be used to pressure test for leaks? A: Nitrogen B: Oxygen C: Carbon dioxide D: None of these should be used for pressure testing - ✅✅✅B: Oxygen What is the nominal operating wattage of a one-quarter horsepower electric motor? A: 186 watts 15 [Date] Which of the following is not a suitable control for an air side economizer as used on a packaged unit air conditioning system? A: Enthalpy control B: Outside air thermostat C: Neither a nor b D: Low pressure control - ✅✅✅D: Low pressure control What two pressures can a pitot tube measure? A: Static and total B: Velocity and total C: Velocity and static D: Total and external static pressure - ✅✅✅A: Static and total An oil separator has which of the following lines or connections attached to it? A: Inlet, outlet, oil line 16 [Date] B: Inlet and outlet C: Inlet and oil line D: None of these is correct - ✅✅✅A: Inlet, outlet, oil line A three-position service valve located on the outlet of a receiver should be left in what position for normal operation with no gauges attached? A: Front-seated B: Mid-seated C: Back-seated D: Cracked - ✅✅✅C: Back-seated A cooling tower is treated for what two conditions? A: Algae and scale B: Algae and lime C: Scale and disease 17 [Date] D: Algae and disease - ✅✅✅A: Algae and scale Which of the following documents are required by law? A: Air balance report B: Charging chart C: Equipment list D: MSDS sheets - ✅✅✅D: MSDS sheets A heating and/or cooling load calculation is used to: A: Choose the correct equipment size B: Determine the correct duct sizes C: Determine the correct cfm to each room D: All of the above - ✅✅✅D: All of the above What component of a dehumidifier can be used to reheat the air after dehumidification has taken place? 20 [Date] Carbon monoxide is the result of: A: Incomplete combustion B: Lowering the temperature of the flame C: Excessive fuel or a lack of oxygen D: All of the above - ✅✅✅D: All of the above The complete combustion of natural gas requires: A: 5 cubic feet of air per cubic foot of gas B: 10 cubic feet of air per cubic foot of gas C: 15 cubic feet of air per cubic foot of gas D: 20 cubic feet of air per pound of natural gas - ✅✅✅C: 15 cubic feet of air per cubic foot of gas A tightly constructed building generally causes the pressure inside the building to be ______ than the pressure outside. A: Higher 21 [Date] B: Lower C: The same D: None of these - ✅✅✅B: Lower R-410A is a ____ refrigerant. A: CFC B: HCFC C: HFC D: POE - ✅✅✅C: HFC A refrigerant classified as an "Azeotropic blend": A: Will not fractionate B: Behaves much like a single-component pure refrigerant C: Does not have a temperature glide 22 [Date] D: All of the above are correct - ✅✅✅D: All of the above are correct Superheat is: A: Difference between saturation temperature in evaporator and temperature of refrigerant leaving evaporator B: Difference between saturation temperature in evaporator and saturation temperature in condenser C: Difference between temperature measured at the compressor suction and compressor discharge lines D: A single temperature taken in the center of the evaporator minus the ambient air temperature - ✅✅✅A: Difference between saturation temperature in evaporator and temperature of refrigerant leaving evaporator