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Hvac Journeyman Prep Test

60 Questions  I  By Ferstade
HVAC Journeyman Prep Test

  
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Question Excerpt

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1.  10.Electrical wiring, contols and connections to equipment and appliances regulated by this code shall be in accordance with __________.
A.
B.
C.
D.
2.  45. The minimum size cast iron pipe that can be utilized for gas piping is _________.
A.
B.
C.
D.
3.  71. How thick of a pad shall a condensor be mounted on when installed on grade surfaces?
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.  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.
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.
B.
C.
D.
7.  5.All gas piping installed on top of roofs shall be elevated not less than _______ inches off the roof surface.
A.
B.
C.
D.
8.  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.
9.  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.
10.  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.
11.  74. What is the function of a heat anticipator wire in the thermostat?
A.
B.
C.
D.
12.  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.
13.  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.
14.  70. What is the minimum openable area required for natural ventilation?
A.
B.
C.
D.
15.  32. The internal diameter of 2 inch type L copper is __________.
A.
B.
C.
D.
16.  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.
17.  49. If a heat pump needs to have an accumulator installed in it, it should be installed in the ____________.
A.
B.
C.
D.
18.  24. The maximum vent connector length of a 8" diameter connector is _______ feet.
A.
B.
C.
D.
19.  37. Underground gas piping systems must be buried at a minimum depth of _______ inches below ground.
A.
B.
C.
D.
20.  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.
21.  57. Round metal ducts used for single swelling units of a size of 16 inches shall be of ______ guage.
A.
B.
C.
D.
22.  25. A thermocouple strength is measured in _____________.
A.
B.
C.
D.
23.  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.
24.  73. Whats the normal voltage of a control circuit for residential service?
A.
B.
C.
D.
25.  33. The condensate line for a 20 ton package unit will be a minimum of ______ diameter.
A.
B.
C.
D.
26.  59. Unvented room heaters shall not have an input rating in excess of ________ btu/hr.
A.
B.
C.
D.
27.  69. An application for a permit must be accompanied by how many sets of construction documents?
A.
B.
C.
D.
28.  53. Which of the following should not be used as a test medium for testing gas piping?
A.
B.
C.
D.
29.  3.______________ motors driving exhaust fans shall not be placed inside booths and ducts.
A.
B.
C.
D.
30.  55. A vent material listed and labeled for use with wall furnaces is type _____ vent.
A.
B.
C.
D.
31.  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.
32.  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.
33.  76. Interior spaces intended for human occupancy shall be provided with active or passive space-heating systems capable of maintaining a minimum of ______ degrees at a point 3 feet above floor on the design heating day.
A.
B.
C.
D.
34.  78. Openings in screens, louvers and grills for exhaust openings shall be _________________________.
A.
B.
C.
D.
35.  8.A level service space in front of an appliance mounted in an attic shall not be less than __________.
A.
B.
C.
D.
36.  64. A mechanical draft venting system shall terminate at least ____ feet above any forced air inlet located within 10 feet.
A.
B.
C.
D.
37.  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.
38.  80. Outlets for exhaust that exceeds ______ degrees shall be designed as a chimney.
A.
B.
C.
D.
39.  22. Passageways around boilers shall have an unobstructed width of not less than _______ inches.
A.
B.
C.
D.
40.  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.
B.
C.
D.
41.  44. Gas piping systems that are to be supplied with a gas of a specific gravity of ______ or less can be sized directly from the tables provided in the international fuel gas code.
A.
B.
C.
D.
42.  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.
43.  31. A safety belt lanyard shall be a minimum of 1/2" nylon, or equivalent, with a maximum length to provide for a fall of no greater than _______ feet.
A.
B.
C.
D.
44.  35. Smoke detectors shall be installed in return air systems with a design capacity greater than ________ cfm.
A.
B.
C.
D.
45.  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.
46.  65. What is the minimum height above the flor an appliance must be installed in a private garage?
A.
B.
C.
D.
47.  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.
48.  19. The equivalent length of a 8" diameter mitered 90 degree elbow is _________.
A.
B.
C.
D.
49.  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.
50.  54. Ducts shall be supported with approved hangers at intervals not exceeding _______ feet.
A.
B.
C.
D.
51.  56. The lowest portion of a floor furnace shall not have less than a ________ inch clearance from grade.
A.
B.
C.
D.
52.  38. Liquid adhesive coatings used on filters shall have a flash point not lower than _______ degrees.
A.
B.
C.
D.
53.  61. Quantities of flammable and combustible liquid in excess of ______ gallons shall be stored in an acceptable or approved cabinet. 
A.
B.
C.
D.
54.  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.
55.  1.How many amps can a 40va, 120volt transformer with a 24volt secondary carry?
A.
B.
C.
D.
56.  72. The minimum clearance from appliances mounted below grade shall be at least?
A.
B.
C.
D.
57.  60. Lifelines shall be secured above the point of operation to an ancorage or structual member capable of supporting a minimum dead weight of ________ pounds.
A.
B.
C.
D.
58.  66. What is the required outdoor air ventalation rate for the bathrooms in motels?
A.
B.
C.
D.
59.  68. Which of the following areas can fuel fired appliances not draw combustion air from?
A.
B.
C.
D.
60.  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.
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