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Hvac Journeyman Prep Test

60 Questions  I  By Ferstade
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1.  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.
2.  12. A minimum openable area to the outdoors shall be  ______ percent of the floor area being naturally ventilated.
A.
B.
C.
D.
3.  54. Ducts shall be supported with approved hangers at intervals not exceeding _______ feet.
A.
B.
C.
D.
4.  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.
5.  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.
6.  40.Support bracing for 1 1/4" copper tubing shall be at interavals no less than _______ feet.
A.
B.
C.
D.
7.  16. What combustion air (one opening method) is needed for appliances totaling 350,000 btu?
A.
B.
C.
D.
8.  64. A mechanical draft venting system shall terminate at least ____ feet above any forced air inlet located within 10 feet.
A.
B.
C.
D.
9.  51. Water is considered a refrigerant. What is its name?
A.
B.
C.
D.
10.  23. Exhaust airflow rate for a barber shop shall be __________ cfm/square foot.
A.
B.
C.
D.
11.  42. Tare weight ( when talking about recovery tanks) means?
A.
B.
C.
D.
12.  13. If you install a 20 mfd capacitor and a 40 mfd capacitor in parallel, you recieve a total capacitance of ___________.
A.
B.
C.
D.
13.  50. NFPA 58-08 has to do with __________.
A.
B.
C.
D.
14.  80. Outlets for exhaust that exceeds ______ degrees shall be designed as a chimney.
A.
B.
C.
D.
15.  81. The maximum horizontal support spacing for pex piping shall be a minimum of ________ inches?
A.
B.
C.
D.
16.  72. The minimum clearance from appliances mounted below grade shall be at least?
A.
B.
C.
D.
17.  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.
18.  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.
19.  41. I have control circuits that total .8 amps. The control secondary voltage is 120 volts. What is th minimum wattage of the transformer needed for this application?
A.
B.
C.
D.
20.  66. What is the required outdoor air ventalation rate for the bathrooms in motels?
A.
B.
C.
D.
21.  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.
22.  77. Where openings below grade provide required natural ventilation, the outside horizontal clear space measured perpendicular to the opening shall be ________ times the depth of the opening.
A.
B.
C.
D.
23.  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.
24.  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.
25.  67. What part of the code allows the inspector to make rules concerning the reuse of equipment?
A.
B.
C.
D.
26.  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.
27.  5.All gas piping installed on top of roofs shall be elevated not less than _______ inches off the roof surface.
A.
B.
C.
D.
28.  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.
29.  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.
30.  1.How many amps can a 40va, 120volt transformer with a 24volt secondary carry?
A.
B.
C.
D.
31.  56. The lowest portion of a floor furnace shall not have less than a ________ inch clearance from grade.
A.
B.
C.
D.
32.  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.
33.  33. The condensate line for a 20 ton package unit will be a minimum of ______ diameter.
A.
B.
C.
D.
34.  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.
35.  74. What is the function of a heat anticipator wire in the thermostat?
A.
B.
C.
D.
36.  78. Openings in screens, louvers and grills for exhaust openings shall be _________________________.
A.
B.
C.
D.
37.  25. A thermocouple strength is measured in _____________.
A.
B.
C.
D.
38.  38. Liquid adhesive coatings used on filters shall have a flash point not lower than _______ degrees.
A.
B.
C.
D.
39.  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.
40.  61. Quantities of flammable and combustible liquid in excess of ______ gallons shall be stored in an acceptable or approved cabinet. 
A.
B.
C.
D.
41.  10.Electrical wiring, contols and connections to equipment and appliances regulated by this code shall be in accordance with __________.
A.
B.
C.
D.
42.  30. Factory built chimneys for medium heat appliances producing flue gases having a temperature above _______ degrees, measured at the entrance to the chimney, shall comply with UL 959.
A.
B.
C.
D.
43.  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.
44.  69. An application for a permit must be accompanied by how many sets of construction documents?
A.
B.
C.
D.
45.  3.______________ motors driving exhaust fans shall not be placed inside booths and ducts.
A.
B.
C.
D.
46.  32. The internal diameter of 2 inch type L copper is __________.
A.
B.
C.
D.
47.  37. Underground gas piping systems must be buried at a minimum depth of _______ inches below ground.
A.
B.
C.
D.
48.  22. Passageways around boilers shall have an unobstructed width of not less than _______ inches.
A.
B.
C.
D.
49.  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.
50.  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.
51.  8.A level service space in front of an appliance mounted in an attic shall not be less than __________.
A.
B.
C.
D.
52.  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.
53.  49. If a heat pump needs to have an accumulator installed in it, it should be installed in the ____________.
A.
B.
C.
D.
54.  73. Whats the normal voltage of a control circuit for residential service?
A.
B.
C.
D.
55.  20. A run winding in a compressor has _______ resistance than the start winding.
A.
B.
C.
D.
56.  68. Which of the following areas can fuel fired appliances not draw combustion air from?
A.
B.
C.
D.
57.  55. A vent material listed and labeled for use with wall furnaces is type _____ vent.
A.
B.
C.
D.
58.  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.
59.  70. What is the minimum openable area required for natural ventilation?
A.
B.
C.
D.
60.  65. What is the minimum height above the flor an appliance must be installed in a private garage?
A.
B.
C.
D.
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