HVAC Journeyman Practice Test

24 Questions | Total Attempts: 29175

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HVAC Journeyman Practice Test

Heating, ventilation, and air conditioning (HVAC) is a combination technology of indoor and vehicular environmental comfort. Are you training to be able to properly install and maintain such systems in any environment? The quiz below is perfect for helping you test out what you know so far. Give it a shot and see what you should read up more on before the finals.


Questions and Answers
  • 1. 
    Welding cylinders shall be moved by ________?
    • A. 

      Dolly or hand truck

    • B. 

      A minimum of two people

    • C. 

      Rolling across the floor

    • D. 

      Tilting and rolling them on their bottom edges

  • 2. 
    A 14-inch gas vent protruding through a roof and located within 8-feet of a vertical wall must terminate not less than ________ feet above highest point it passes through the roof.
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 3. 
    Refrigerant piping that crosses an open space that affords a passageway in any building shall not be less than _________ above the floor unless the piping is located against the ceiling of such space.
    • A. 

      6'6"

    • B. 

      7'3"

    • C. 

      8'0"

    • D. 

      10'0"

  • 4. 
    7. The length of pipe to be cut of 3/4" pipe that has a 90 and a 45 at each end is _______.
    • A. 

      17 5/8"

    • B. 

      17 1/4"

    • C. 

      18"

    • D. 

      18 5/8"

  • 5. 
    11. Where unvented infrared heaters are installed, natural or mechanical means shall provide outdoor ventilation air at a rate of not less than ________ of the aggregateinput rating of all such heaters installed in the space.
    • A. 

      2cfm per 1000 btu/h

    • B. 

      5cfm per 2000 btu/h

    • C. 

      8cfm per 5000 btu/h

    • D. 

      4cfm per 1000 btu/h

  • 6. 
    15. A natural gas piping system that has a 250,000 btu furnace attached to it and has a longest run of 93', inlet pressure under 2 psi, pressure drop of .5 in w.c., and specific gravity of .60 should have a schedule 40 mettallic pipe no less than ________ in diameter.
    • A. 

      1

    • B. 

      1 1/4

    • C. 

      1 1/2

    • D. 

      2

  • 7. 
    18. The minimum fire protection rating for a fire damper installed in less than 3 hour fire resistance rated assemblies is ________ hours.
    • A. 

      0.5

    • B. 

      1.0

    • C. 

      1.5

    • D. 

      3.0

  • 8. 
    19. The equivalent length of a 8" diameter mitered 90 degree elbow is _________.
    • A. 

      5'

    • B. 

      1'7"

    • C. 

      1'

    • D. 

      2'6"

  • 9. 
    21. All hoses exceeding _________ inside diameter shall have a safety device at the source of supply or branch line to reduce pressure in case of hose failure.
    • A. 

      1/4"

    • B. 

      1/2"

    • C. 

      3/8"

    • D. 

      1"

  • 10. 
    24. The maximum vent connector length of a 8" diameter connector is _______ feet.
    • A. 

      2

    • B. 

      4

    • C. 

      8

    • D. 

      12

  • 11. 
    25. A thermocouple strength is measured in _____________.
    • A. 

      Microamps

    • B. 

      Millivolts

    • C. 

      Microvolts

    • D. 

      Milliamps

  • 12. 
    28. The use of gypsum boards to form plenums shall be limited to systems where the temperatures do not exceed __________ degrees.
    • A. 

      100

    • B. 

      175

    • C. 

      125

    • D. 

      225

  • 13. 
    32. The internal diameter of 2 inch type L copper is __________.
    • A. 

      1.985

    • B. 

      1.959

    • C. 

      1.90

    • D. 

      2.2

  • 14. 
    33. The condensate line for a 20 ton package unit will be a minimum of ______ diameter.
    • A. 

      1/2

    • B. 

      3/4

    • C. 

      1

    • D. 

      1 1/4

  • 15. 
    40.Support bracing for 1 1/4" copper tubing shall be at interavals no less than _______ feet.
    • A. 

      3

    • B. 

      4

    • C. 

      6

    • D. 

      10

  • 16. 
    NFPA 58-08 has to do with __________.
    • A. 

      Parking structures

    • B. 

      Liquid petroleum gas

    • C. 

      National electric code

    • D. 

      Chimneys, fireplaces, vents and solid burning appliances

  • 17. 
    51. Water is considered a refrigerant. What is its name?
    • A. 

      R-1270

    • B. 

      R-401

    • C. 

      R-718

    • D. 

      R-170

  • 18. 
    54. Ducts shall be supported with approved hangers at intervals not exceeding _______ feet.
    • A. 

      5

    • B. 

      10

    • C. 

      8

    • D. 

      25

  • 19. 
    56. The lowest portion of a floor furnace shall not have less than a ________ inch clearance from grade.
    • A. 

      10

    • B. 

      14

    • C. 

      Needs to have access to crawl under

    • D. 

      6

  • 20. 
    64. A mechanical draft venting system shall terminate at least ____ feet above any forced air inlet located within 10 feet.
    • A. 

      3

    • B. 

      5

    • C. 

      10

    • D. 

      15

  • 21. 
    65. What is the minimum height above the flor an appliance must be installed in a private garage?
    • A. 

      6 feet

    • B. 

      8 feet

    • C. 

      10 feet

    • D. 

      12 feet

  • 22. 
    66. What is the required outdoor air ventalation rate for the bathrooms in motels?
    • A. 

      100 cfm

    • B. 

      75 cfm

    • C. 

      25cfm

    • D. 

      10 cfm

  • 23. 
    67. What part of the code allows the inspector to make rules concerning the reuse of equipment?
    • A. 

      Chapter 1

    • B. 

      Chapter 3

    • C. 

      Chapter 9

    • D. 

      Chapter 10

  • 24. 
    How many amps can a 40va, 120volt transformer with a 24volt secondary carry?
    • A. 

      2.0

    • B. 

      1.7

    • C. 

      3.0

    • D. 

      0.3

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