HVAC JOURNEYMAN TEST BANK 250
COMPLETE QUESTIONS AND ANSWERS
EXPERT REVIEW PRACTICE RESOURCE
⩥ Flexible air duct may be what length? (A)10' (B)2' (C)14' (D)6'.
Answer: 14' (IMC 603.6.1.1)
⩥ The maximum vertical distance between the front lower lip of a
canopy Type 1 hood and the appliance surface shall be ____ feet: (A)5'
(B)3' (C)6' (D)4'.
Answer: 4' (IMC 507.4.1)
⩥ The return air duct to a blower type warm air furnace is being
replaced, how many sq. inches of free air are required per 1,000 BTU or
rated capacity of the furnace? (A)3" (B)1" (C)4" (D)2".
Answer: 2" (Fuel Gas Code 9.3.3.2)
⩥ The existing terminals of a mechanical draft system shall not be less
than ___ feet above finished ground level where located adjacent to
public walkways: (A)7' (B)2' (C)8' (D)5'.
Answer: 7' (IMC 804.3.4 #1)
,⩥ What device is installed to prevent a back draft occurring in an
appliance? (A)Power draft vent (B)Vent cap (C)Saftey relief valve
(D)Draft hood.
Answer: Draft hood (Fuel Gas Code, 3.3.33)
⩥ Minimum distance between the lowest edge of a grease filter and the
cooking surface with exposed flame or burners is: (A)42" (B)6" (C)48"
(D)24".
Answer: 24" (IMC Table 507.2.8)
⩥ Non-metallic ducts shall have a flame spread index of ___ or less and
a smoke-devolped index of ___ or less: (A)100,200 (B)84,723
(C)50,100 (D)25,50.
Answer: 25,50 (IMC 602.2.1)
⩥ A blower fan used for the purpose of distributing supply air to a room,
space, or area is a: (A)Air-handling unit (B)Return fan (C)Make-up fan
(D)Exhaust fan.
Answer: Air handling unit (IMC Chapter #2)
⩥ Maximum flame spread distance of ___ feet for combustable
electrical wires, cables, and optical fiber cables exposed within a
plenum: (A)30' (B)3' (C)70' (D)5'.
Answer: 5' (IMC 602.2.1.1)
, ⩥ Where all combustion air is provided by a mechanical air supply
system, the combustion air shall be supplied from outdoors at the
minimum rate of: (A)100ft3/1000BTU/hr (B)0.35ft3/1000BTU/hr (C)
25ft3/1000BTU/hr (D)50ft/1000BTU/hr.
Answer: 0.35ft3/BTU/hr (Fuel Gas Code, 9.3.6)
⩥ A chimney for a residential type or low-heat appliances shall exceed at
least ___ feet above the highest point where it passes through the roof of
a building? (A)5' (B)2' (C)10' (D)3'.
Answer: 3' (Fuel Gas Code, 12.6.2.1)
⩥ A chimney for a low heat appliance must withstand a continuous flue
gas temperature not exceeding ___: (A)1000 (B)1800 (C)800 (D)1200.
Answer: 1000
⩥ When running flue gas pipe, any angle greater than ___ from the
vertical is considered to be horizontal: (A)30 (B)60 (C)45 (D)90.
Answer: 45 (Fuel Gas Code, 12.7.3.2)
⩥ A direct vent appliance with an input over 50,000BTU/hr, shall have
at least ___ inches from any air opening into a building: (A)12 (B)6
(C)18 (D)9.
Answer: 12
COMPLETE QUESTIONS AND ANSWERS
EXPERT REVIEW PRACTICE RESOURCE
⩥ Flexible air duct may be what length? (A)10' (B)2' (C)14' (D)6'.
Answer: 14' (IMC 603.6.1.1)
⩥ The maximum vertical distance between the front lower lip of a
canopy Type 1 hood and the appliance surface shall be ____ feet: (A)5'
(B)3' (C)6' (D)4'.
Answer: 4' (IMC 507.4.1)
⩥ The return air duct to a blower type warm air furnace is being
replaced, how many sq. inches of free air are required per 1,000 BTU or
rated capacity of the furnace? (A)3" (B)1" (C)4" (D)2".
Answer: 2" (Fuel Gas Code 9.3.3.2)
⩥ The existing terminals of a mechanical draft system shall not be less
than ___ feet above finished ground level where located adjacent to
public walkways: (A)7' (B)2' (C)8' (D)5'.
Answer: 7' (IMC 804.3.4 #1)
,⩥ What device is installed to prevent a back draft occurring in an
appliance? (A)Power draft vent (B)Vent cap (C)Saftey relief valve
(D)Draft hood.
Answer: Draft hood (Fuel Gas Code, 3.3.33)
⩥ Minimum distance between the lowest edge of a grease filter and the
cooking surface with exposed flame or burners is: (A)42" (B)6" (C)48"
(D)24".
Answer: 24" (IMC Table 507.2.8)
⩥ Non-metallic ducts shall have a flame spread index of ___ or less and
a smoke-devolped index of ___ or less: (A)100,200 (B)84,723
(C)50,100 (D)25,50.
Answer: 25,50 (IMC 602.2.1)
⩥ A blower fan used for the purpose of distributing supply air to a room,
space, or area is a: (A)Air-handling unit (B)Return fan (C)Make-up fan
(D)Exhaust fan.
Answer: Air handling unit (IMC Chapter #2)
⩥ Maximum flame spread distance of ___ feet for combustable
electrical wires, cables, and optical fiber cables exposed within a
plenum: (A)30' (B)3' (C)70' (D)5'.
Answer: 5' (IMC 602.2.1.1)
, ⩥ Where all combustion air is provided by a mechanical air supply
system, the combustion air shall be supplied from outdoors at the
minimum rate of: (A)100ft3/1000BTU/hr (B)0.35ft3/1000BTU/hr (C)
25ft3/1000BTU/hr (D)50ft/1000BTU/hr.
Answer: 0.35ft3/BTU/hr (Fuel Gas Code, 9.3.6)
⩥ A chimney for a residential type or low-heat appliances shall exceed at
least ___ feet above the highest point where it passes through the roof of
a building? (A)5' (B)2' (C)10' (D)3'.
Answer: 3' (Fuel Gas Code, 12.6.2.1)
⩥ A chimney for a low heat appliance must withstand a continuous flue
gas temperature not exceeding ___: (A)1000 (B)1800 (C)800 (D)1200.
Answer: 1000
⩥ When running flue gas pipe, any angle greater than ___ from the
vertical is considered to be horizontal: (A)30 (B)60 (C)45 (D)90.
Answer: 45 (Fuel Gas Code, 12.7.3.2)
⩥ A direct vent appliance with an input over 50,000BTU/hr, shall have
at least ___ inches from any air opening into a building: (A)12 (B)6
(C)18 (D)9.
Answer: 12
