HVAC journeyman prep test Correct 100%(RATED A+)

A listed smoke damper designed to resist the passage of smoke shall be provided at each point in a duct or air transfer opening penetrates a: (A)smoke barrier wall (B)fire rated wall (C)interior wall (D)corridor wall - ANSWER Corridor wall (IMC 607.5.4) 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)