HVAC Journeyman License Exam Prep Test!

60 Questions | Total Attempts: 20411

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HVAC Journeyman License Exam Prep 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. 
    1. 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

  • 2. 
    2. 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

  • 3. 
    3. ______________ motors driving exhaust fans shall not be placed inside booths and ducts.
    • A. 

      Large horsepower

    • B. 

      Fractional horsepower

    • C. 

      Electric

    • D. 

      Permanent split capacitor

  • 4. 
    4. 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

  • 5. 
    5. All gas piping installed on top of roofs shall be elevated not less than _______ inches off the roof surface.
    • A. 

      3.5

    • B. 

      4.5

    • C. 

      6

    • D. 

      2

  • 6. 
    6. Refrigerant piping that crosses an open space that affords 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"

  • 7. 
    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"

  • 8. 
    8. A level service space in front of an appliance mounted in an attic shall not be less than __________.
    • A. 

      30" wide x 30" deep

    • B. 

      30" wide x 36" deep

    • C. 

      36" wide x 30" deep

    • D. 

      42" wide x 30" deep

  • 9. 
    9. In exterior walls and bearing partitions, any wood stud is permitted to be cut or notched not to exceed ________ percent of its depth.
    • A. 

      10

    • B. 

      25

    • C. 

      35

    • D. 

      40

  • 10. 
    10.Electrical wiring, contols and connections to equipment and appliances regulated by this code shall be in accordance with __________.
    • A. 

      AH116-02

    • B. 

      NFPA 704-07

    • C. 

      NFPA 70

    • D. 

      UL 731-95

  • 11. 
    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

  • 12. 
    12. A minimum openable area to the outdoors shall be  ______ percent of the floor area being naturally ventilated.
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 13. 
    13. If you install a 20 mfd capacitor and a 40 mfd capacitor in parallel, you recieve a total capacitance of ___________.
    • A. 

      10 mfd

    • B. 

      30 mfd

    • C. 

      60 mfd

    • D. 

      13.3 mfd

  • 14. 
    14. If you add refrigerant to an airconditioner that has an external equalized TXV, the subcooling will _________.
    • A. 

      Go up

    • B. 

      Go down

    • C. 

      Be the same as superheat

    • D. 

      Adding refrigerant to this system does not effect subcooling

  • 15. 
    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

  • 16. 
    16. What combustion air (one opening method) is needed for appliances totaling 350,000 btu?
    • A. 

      7"

    • B. 

      10"

    • C. 

      14"

    • D. 

      16"

  • 17. 
    17. A circuit having a supply voltage of 240 volts and a resistance reading of 100 ohms will have an amperage reading of _________.
    • A. 

      .41

    • B. 

      2.4

    • C. 

      4.8

    • D. 

      Can not tell by information given above

  • 18. 
    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

  • 19. 
    • A. 

      5'

    • B. 

      1'7"

    • C. 

      1'

    • D. 

      2'6"

  • 20. 
    20. A run winding in a compressor has _______ resistance than the start winding.
    • A. 

      The same

    • B. 

      More

    • C. 

      Less

    • D. 

      Can not tell by the information given above

  • 21. 
    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"

  • 22. 
    22. Passageways around boilers shall have an unobstructed width of not less than _______ inches.
    • A. 

      10

    • B. 

      16

    • C. 

      18

    • D. 

      24

  • 23. 
    23. Exhaust airflow rate for a barber shop shall be __________ cfm/square foot.
    • A. 

      2.0

    • B. 

      .25

    • C. 

      4.0

    • D. 

      .5

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

      2

    • B. 

      4

    • C. 

      8

    • D. 

      12

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

      Microamps

    • B. 

      Millivolts

    • C. 

      Microvolts

    • D. 

      Milliamps