HVAC JOURNEYMAN EXAM AND PRACTICE EXAM 300
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES
Liquid adhesive coatings used on air filters for air conditioning or heating systems
shall have a flash point not lower than _______ :
a: 200°F
b: 250°F
c: 350°F
d: 325°F - ANSWER: d: 325°F
Refer: IMC Code 605.1
Connectors shall connect to a chimney flue at a point not less than ______ above the
lowest portion of the interior of the chimney flue:
a: 10 inches
b: 12 inches
c: 16 inches
d: 14 inches - ANSWER: b: 12 inches
Refer: IMC Code 801.12
Liquids having flash points at or above 100°F (38°C) and below 140°F (60°C) comes
under ________ combustible liquid:
a: Class I
b: Class II
c: Class IIIA
d: Class IIIB - ANSWER: b: Class II
Where located adjacent to walkways, the vertical termination of mechanical draft
systems shall be not less than ______ above the level of the walkway:
a: 7 feet
b: 5 feet
c: 3 feet
d: 4 feet - ANSWER: a: 7 feet
Refer: IMC Code 804.3.5.1
Commercial kitchen Grease duct systems serving a Type I hood shall be designed and
installed to provide an air velocity within the duct system of not less than ______
feet per minute:
a: 1000
b: 500
c: 400
d: 250 - ANSWER: b: 500
Refer: IMC Code 506.3.4
, The minimum openable area to the outdoors shall be ____ of the floor area being
naturally ventilated:
a: 6%
b: 8%
c: 4%
d: 2% - ANSWER: c: 4%
Refer: IMC Code 504.7
Fire dampers are not required at penetrations of shafts where the steel exhaust
subducts extend at least _______ vertically in exhaust shafts provided that there is a
continuous airflow upward to the outdoors:
a: 25 inches
b: 22 inches
c: 32 inches
d: 28 inches - ANSWER: b: 22 inches
Refer: IMC Code 607.5.5 Exp 1.1
Underground Ducts shall have a minimum slope of _______ per foot to allow
drainage to a point provided with access:
a: 1/2 inch
b: 1/6 inch
c: 1/4 inch
d: 1/8 inch - ANSWER: d: 1/8 inch
Refer: IMC Code 603.8.1
Masonry chimney flues shall be provided with a cleanout opening having a minimum
height of ______ :
a: 6 inches
b: 12 inches
c: 8 inches
d: 10 inches - ANSWER: a: 6 inches
Refer: IMC Code 801.13
Commercial Kitchen Exhaust equipment serving a Type I hood shall have a clearance
to combustible construction of not less than ______ :
a: 30 inches
b: 12 inches
c: 24 inches
d: 18 inches - ANSWER: d: 18 inches
Refer: IMC Code 506.5.4
Steam-Heating Boiler operated at pressures not exceeding ______ for steam:
a: 20 psi
b: 15 psi
c: 10 psi
d: 25 psi - ANSWER: b: 15 psi
Refer: IMC Code - Definitions
QUESTIONS AND CORRECT DETAILED ANSWERS WITH
RATIONALES
Liquid adhesive coatings used on air filters for air conditioning or heating systems
shall have a flash point not lower than _______ :
a: 200°F
b: 250°F
c: 350°F
d: 325°F - ANSWER: d: 325°F
Refer: IMC Code 605.1
Connectors shall connect to a chimney flue at a point not less than ______ above the
lowest portion of the interior of the chimney flue:
a: 10 inches
b: 12 inches
c: 16 inches
d: 14 inches - ANSWER: b: 12 inches
Refer: IMC Code 801.12
Liquids having flash points at or above 100°F (38°C) and below 140°F (60°C) comes
under ________ combustible liquid:
a: Class I
b: Class II
c: Class IIIA
d: Class IIIB - ANSWER: b: Class II
Where located adjacent to walkways, the vertical termination of mechanical draft
systems shall be not less than ______ above the level of the walkway:
a: 7 feet
b: 5 feet
c: 3 feet
d: 4 feet - ANSWER: a: 7 feet
Refer: IMC Code 804.3.5.1
Commercial kitchen Grease duct systems serving a Type I hood shall be designed and
installed to provide an air velocity within the duct system of not less than ______
feet per minute:
a: 1000
b: 500
c: 400
d: 250 - ANSWER: b: 500
Refer: IMC Code 506.3.4
, The minimum openable area to the outdoors shall be ____ of the floor area being
naturally ventilated:
a: 6%
b: 8%
c: 4%
d: 2% - ANSWER: c: 4%
Refer: IMC Code 504.7
Fire dampers are not required at penetrations of shafts where the steel exhaust
subducts extend at least _______ vertically in exhaust shafts provided that there is a
continuous airflow upward to the outdoors:
a: 25 inches
b: 22 inches
c: 32 inches
d: 28 inches - ANSWER: b: 22 inches
Refer: IMC Code 607.5.5 Exp 1.1
Underground Ducts shall have a minimum slope of _______ per foot to allow
drainage to a point provided with access:
a: 1/2 inch
b: 1/6 inch
c: 1/4 inch
d: 1/8 inch - ANSWER: d: 1/8 inch
Refer: IMC Code 603.8.1
Masonry chimney flues shall be provided with a cleanout opening having a minimum
height of ______ :
a: 6 inches
b: 12 inches
c: 8 inches
d: 10 inches - ANSWER: a: 6 inches
Refer: IMC Code 801.13
Commercial Kitchen Exhaust equipment serving a Type I hood shall have a clearance
to combustible construction of not less than ______ :
a: 30 inches
b: 12 inches
c: 24 inches
d: 18 inches - ANSWER: d: 18 inches
Refer: IMC Code 506.5.4
Steam-Heating Boiler operated at pressures not exceeding ______ for steam:
a: 20 psi
b: 15 psi
c: 10 psi
d: 25 psi - ANSWER: b: 15 psi
Refer: IMC Code - Definitions
