HVAC Journeyman Prep Test

60 Questions  I  By Ferstade
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1.  2.Welding cylinders shall be moved by ________?
A.
B.
C.
D.
2.  27. What effect would hooking up a 240 volt transformer to a 208 volt supply voltage have on the secondary voltage?
A.
B.
C.
D.
3.  26. A vent shall terminate through a 12/12 roof slope by ______ feet as long as it is no closer than 8' from a vertical wall.
A.
B.
C.
D.
4.  12. A minimum openable area to the outdoors shall be  ______ percent of the floor area being naturally ventilated.
A.
B.
C.
D.
5.  39. Guards are required when appliances, equipment, fans or other components that require service and roof hatch openings are located within _________ feet of the roof edge.
A.
B.
C.
D.
6.  28. The use of gypsum boards to form plenums shall be limited to systems where the temperatures do not exceed __________ degrees.
A.
B.
C.
D.
7.  56. The lowest portion of a floor furnace shall not have less than a ________ inch clearance from grade.
A.
B.
C.
D.
8.  68. Which of the following areas can fuel fired appliances not draw combustion air from?
A.
B.
C.
D.
9.  25. A thermocouple strength is measured in _____________.
A.
B.
C.
D.
10.  24. The maximum vent connector length of a 8" diameter connector is _______ feet.
A.
B.
C.
D.
11.  3.______________ motors driving exhaust fans shall not be placed inside booths and ducts.
A.
B.
C.
D.
12.  45. The minimum size cast iron pipe that can be utilized for gas piping is _________.
A.
B.
C.
D.
13.  5.All gas piping installed on top of roofs shall be elevated not less than _______ inches off the roof surface.
A.
B.
C.
D.
14.  63. Oxygen depletion safety systems shall shut off the gas supply to the main and pilot burners when the oxygen in the surrounding atmosphere is depleted to the percent concentration specified by the manufactuer, but not lower than ______ percent.
A.
B.
C.
D.
15.  37. Underground gas piping systems must be buried at a minimum depth of _______ inches below ground.
A.
B.
C.
D.
16.  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.
B.
C.
D.
17.  47. Test pressure used when testing new gas systems shall be no less than _________ times the proposed maximum working pressure but not less than 3 psig irrespective of design pressure.
A.
B.
C.
D.
18.  50. NFPA 58-08 has to do with __________.
A.
B.
C.
D.
19.  51. Water is considered a refrigerant. What is its name?
A.
B.
C.
D.
20.  55. A vent material listed and labeled for use with wall furnaces is type _____ vent.
A.
B.
C.
D.
21.  67. What part of the code allows the inspector to make rules concerning the reuse of equipment?
A.
B.
C.
D.
22.  16. What combustion air (one opening method) is needed for appliances totaling 350,000 btu?
A.
B.
C.
D.
23.  81. The maximum horizontal support spacing for pex piping shall be a minimum of ________ inches?
A.
B.
C.
D.
24.  18. The minimum fire protection rating for a fire damper installed in less than 3 hour fire resistance rated assemblies is ________ hours.
A.
B.
C.
D.
25.  29. A liquid is considered flammable if it has a flash point below ________ degrees and has a vapor pressure not exceeding 50 psia.
A.
B.
C.
D.
26.  72. The minimum clearance from appliances mounted below grade shall be at least?
A.
B.
C.
D.
27.  49. If a heat pump needs to have an accumulator installed in it, it should be installed in the ____________.
A.
B.
C.
D.
28.  62. Oxygen cylinders in storage shall be seperated from fuel-gas cylinders or combustible materials a minimum of ______ feet or by a noncombustible barrier at least 5 feet high having a fire resistance rating of at least 1/2 hour.
A.
B.
C.
D.
29.  79. The bottom of an air inlet or exhaust opening in fuel-dispensing areas shall be located not more than _________ inches above the floor
A.
B.
C.
D.
30.  74. What is the function of a heat anticipator wire in the thermostat?
A.
B.
C.
D.
31.  35. Smoke detectors shall be installed in return air systems with a design capacity greater than ________ cfm.
A.
B.
C.
D.
32.  20. A run winding in a compressor has _______ resistance than the start winding.
A.
B.
C.
D.
33.  48. I have a 1025 rpm motor with a 3.5" motor pulley and i need a blower rpm of 400 rpm. What size blower pulley do i need?
A.
B.
C.
D.
34.  53. Which of the following should not be used as a test medium for testing gas piping?
A.
B.
C.
D.
35.  1.How many amps can a 40va, 120volt transformer with a 24volt secondary carry?
A.
B.
C.
D.
36.  52. Underground ducts shall have a minimum slope of _____ inch per foot to allow drainage to a point provided with access.
A.
B.
C.
D.
37.  75. What is the minimum height of a guard when a unit is mounted close to the edge of a roof?
A.
B.
C.
D.
38.  73. Whats the normal voltage of a control circuit for residential service?
A.
B.
C.
D.
39.  19. The equivalent length of a 8" diameter mitered 90 degree elbow is _________.
A.
B.
C.
D.
40.  80. Outlets for exhaust that exceeds ______ degrees shall be designed as a chimney.
A.
B.
C.
D.
41.  34. Where equipment requiring access and appliances are installed on roofs or elevated structures at a heigth exceeding _______ feet, such access shall be provided by a permanent approved means of access.
A.
B.
C.
D.
42.  36. Equipment and appliances installed at grade level shall be supported on a level concrete slab or other approved material extending not less than _________ inches above adjoining grade.
A.
B.
C.
D.
43.  7.The length of pipe to be cut of 3/4" pipe that has a 90 and a 45 at each end is _______.
A.
B.
C.
D.
44.  43. An application for a permit for any proposed work shall be deemed to have been abandoned ______ days after the date of filing.
A.
B.
C.
D.
45.  59. Unvented room heaters shall not have an input rating in excess of ________ btu/hr.
A.
B.
C.
D.
46.  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.
B.
C.
D.
47.  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.
B.
C.
D.
48.  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.
B.
C.
D.
49.  38. Liquid adhesive coatings used on filters shall have a flash point not lower than _______ degrees.
A.
B.
C.
D.
50.  46. Vented wall furnaces shall be located such that any door swing shall not come closer than _______ inches to any air inlet or air outlet measured at right angles to the opening.
A.
B.
C.
D.
51.  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.
B.
C.
D.
52.  58. The flash point of a transfer fluid in a hydronic piping system shall be a minimum of _______ degrees above the maximum system operating pressure.
A.
B.
C.
D.
53.  42. Tare weight ( when talking about recovery tanks) means?
A.
B.
C.
D.
54.  70. What is the minimum openable area required for natural ventilation?
A.
B.
C.
D.
55.  17. A circuit having a supply voltage of 240 volts and a resistance reading of 100 ohms will have an amperage reading of _________.
A.
B.
C.
D.
56.  71. How thick of a pad shall a condensor be mounted on when installed on grade surfaces?
A.
B.
C.
D.
57.  33. The condensate line for a 20 ton package unit will be a minimum of ______ diameter.
A.
B.
C.
D.
58.  54. Ducts shall be supported with approved hangers at intervals not exceeding _______ feet.
A.
B.
C.
D.
59.  78. Openings in screens, louvers and grills for exhaust openings shall be _________________________.
A.
B.
C.
D.
60.  22. Passageways around boilers shall have an unobstructed width of not less than _______ inches.
A.
B.
C.
D.
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