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NATE Final Exam #1 Questions and answers 2023/24 Liberty University $17.99   Add to cart

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NATE Final Exam #1 Questions and answers 2023/24 Liberty University

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NATE Final Exam #1 Questions and answers 2023/24 Liberty University NATE Final Exam #1 Questions and answers 2023/24 Liberty University NATE Final Exam #1 Questions and answers 2023/24 Liberty University NATE Final Exam #1 Questions and answers 2023/24 Liberty University

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  • August 31, 2023
  • 12
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
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NATE Final Exam #1 Questions and
answers 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 - correct answer 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 - correct answer B: $10.00

Which of the following jobs requires safety glasses?

A: Driving a vehicle

B: Extending a ladder

C: Brazing

D: Pulling thermostat wire - correct answer 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 - correct answer A: Micron gauge

ASHRAE Standard 34 deals with:

A: Carbon monoxide safety levels

B: Refrigerant quality

C: Equipment room ventilation and alarms

D: Refrigerant toxicity and flammability - correct answer D: Refrigerant toxicity and
flammability

ANSI/ASHRAE 34 published in 2001 and entitled "Designation and Safety Classification
of Refrigerants".
• Class A signifies refrigerants for which toxicity has not been identified at
concentrations less than or equal to 400 ppm;
• Class B signifies refrigerants for which there is evidence of toxicity at concentrations
below 400 ppm.
• Class 1 indicates refrigerants that do not show flame propagation when tested in air at
21°C and 101 kPa;
• Class 2 indicates refrigerants having a lower flammability limit of more than 0.10 kg/m3
at 21°C and 101 kPa and a heat of combustion of less than 19 kJ/kg;
• Class 3 indicates refrigerants that are highly flammable as defined by a lower
flammability limit of less than or equal to 0.10 kg/m3 at 21°C and 101 kPa or a heat of
combustion greater than or equal to 19 kJ/kg.

What control would you use on a capillary tube or automatic expansion valve system to
maintain the desired temperature?

A: Dual pressure control

B: High pressure control

C: Thermostatic temperature control

D: Low pressure control - correct answer C: Thermostatic temperature control

The total heat contained in any substance is obtained by adding together its:

A: Radiant and specific heat

B: Latent and sensible heat

C: Radiant and sensible heat

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