Hvac Journeyman Exam
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Defects on gas piping or fittings shall be _____.(A)
repaired(B) replaced or repaired and retested(C) repaired
by a certified welder(D) ignored, as the operating
pressure is much less than the air test. - answer B. Fitting
shall be replaced or repaired and retested. UMC Section
1316.4.3
Every absorption refrigerating system supported from the
ground shall rest on a concrete slab extending not less
than _____ the adjoining ground level.(A) 3 inches below(B)
3 inches above (C) 6 inches below(D) 6 inches above. -
answer B. Slab extending not less than 3" above the
adjoining ground level. UMC Section 1106.2
Any part of a venting system installed at an angle greater
than 45 degrees from the vertical is considered by code to
be _____.(A) vertica(B) horizontal l (C) a flat vent (D) an
offset vent - answer B. any part of the venting installed at
an angle GREATER than 45 degrees is considered by this
code to be Horizontal UMC Section 802.6.1.1
Listed transition ducts f or clothes dryers shall not
exceed_____ feet in length. A.3 B.4 C.5 D.6. - answer D.
Dryers shall not exceed 6 feet in length. UMC Section
504.3.2.1
,Industrial product-conveying ducts and their fittings for
abrasive and nonabrasive dust or solid materials shall be
constructed of _____.(A) sheet meta(B) polyvinyl chloride l
(C) fiberglass (D) A and C apply - answer A. Shall Be
Constructed of sheet metal. UMC Section. 5 0 6.1
Industrial product-conveying ducts and their fittings for
abrasive and nonabrasive dust or solid materials shall be
constructed of _____.(A) sheet metal ((B) polyvinyl chloride
C) fiberglass (D) A and C apply - answer A 511.2
Unlisted vented gas fireplaces shall have a clearance at
the sides and rear of not less than _____ inches. Is the
Answer: A. 10" B. 12" C 16" D. 18". - answer D. clearance
of an unlisted vented gas fireplace at the sides and the
rear not less than 18". UMC Section 908.2(B)
Leaks in gas piping shall be located _____.(A) with a
sniffer(B) with a presto-lite flame (C) with a noncorrosive
leak-detecting fluid (D) by increasing the air pressure
during a test until the leaks are heard as a whistle. -
answer C. leaks in a gas piping shall be located with a non
corrosive leak detecting fluid. UMC Section 1316.4.2
Condensate drain piping shall have a slope of not less
than _____ inch per foot. A 1⁄8" B.¼" C.½" D. 1" - answer A.
Slope of not less than 1/8" per foot. UMC Section 309.1
The minimum gauge or size steel wire used to support
horizontal metal ducts 10 inches or less in size is _____.
A.14 AWG B.16 AWG C.18 AWG D.20 AWG - answer C. 18
, Minimum Gauge note: AWG is the abbreviation for "gauge
size" Table 6-7(B)
When smoke detectors are required as part of an
automatic shutoff system, they shall be installed in the
_____. A. return air duct ahead of any fresh-air inlet(B)
main supply air duct served by such equipment(C) fresh-
air inlet(D) main return and the main supply duct. -
answer B. shall be installed in the main supply air duct
served by equipment. UMC Section 609.0(5)
The largest fuel-burning appliance allowed in a room
100'W x 20'L x 8'H without combustion air openingsis _____
Btu.(A) 80,000 (C) 140,000(B) 100,000 (D) 320,000 -
answer 31 D. 701.2.1
Return air ducts that serve a dwelling unit shall be
permitted to be of _____ construction? A.non-combustible
B. combustible C. rated D. none of the above. - answer B.
Shall be permitted to be of combustible type UMC Section
602.2 Ex (1)
Solid fuel-burning appliances _____ be connected to a
venting system that serves a gas- or oil-burningappliance.
(A) shall (B) may (C) shall not(D) with special approval
may - answer C. appliances shall not UMC Section
802.5.5.1
Any joint obtained by joining of metal parts with alloys
that melt at temperatures higher than 840°F, but
lowerthan the melting temperature of the parts to be
latest updated version with
expert solutions
Defects on gas piping or fittings shall be _____.(A)
repaired(B) replaced or repaired and retested(C) repaired
by a certified welder(D) ignored, as the operating
pressure is much less than the air test. - answer B. Fitting
shall be replaced or repaired and retested. UMC Section
1316.4.3
Every absorption refrigerating system supported from the
ground shall rest on a concrete slab extending not less
than _____ the adjoining ground level.(A) 3 inches below(B)
3 inches above (C) 6 inches below(D) 6 inches above. -
answer B. Slab extending not less than 3" above the
adjoining ground level. UMC Section 1106.2
Any part of a venting system installed at an angle greater
than 45 degrees from the vertical is considered by code to
be _____.(A) vertica(B) horizontal l (C) a flat vent (D) an
offset vent - answer B. any part of the venting installed at
an angle GREATER than 45 degrees is considered by this
code to be Horizontal UMC Section 802.6.1.1
Listed transition ducts f or clothes dryers shall not
exceed_____ feet in length. A.3 B.4 C.5 D.6. - answer D.
Dryers shall not exceed 6 feet in length. UMC Section
504.3.2.1
,Industrial product-conveying ducts and their fittings for
abrasive and nonabrasive dust or solid materials shall be
constructed of _____.(A) sheet meta(B) polyvinyl chloride l
(C) fiberglass (D) A and C apply - answer A. Shall Be
Constructed of sheet metal. UMC Section. 5 0 6.1
Industrial product-conveying ducts and their fittings for
abrasive and nonabrasive dust or solid materials shall be
constructed of _____.(A) sheet metal ((B) polyvinyl chloride
C) fiberglass (D) A and C apply - answer A 511.2
Unlisted vented gas fireplaces shall have a clearance at
the sides and rear of not less than _____ inches. Is the
Answer: A. 10" B. 12" C 16" D. 18". - answer D. clearance
of an unlisted vented gas fireplace at the sides and the
rear not less than 18". UMC Section 908.2(B)
Leaks in gas piping shall be located _____.(A) with a
sniffer(B) with a presto-lite flame (C) with a noncorrosive
leak-detecting fluid (D) by increasing the air pressure
during a test until the leaks are heard as a whistle. -
answer C. leaks in a gas piping shall be located with a non
corrosive leak detecting fluid. UMC Section 1316.4.2
Condensate drain piping shall have a slope of not less
than _____ inch per foot. A 1⁄8" B.¼" C.½" D. 1" - answer A.
Slope of not less than 1/8" per foot. UMC Section 309.1
The minimum gauge or size steel wire used to support
horizontal metal ducts 10 inches or less in size is _____.
A.14 AWG B.16 AWG C.18 AWG D.20 AWG - answer C. 18
, Minimum Gauge note: AWG is the abbreviation for "gauge
size" Table 6-7(B)
When smoke detectors are required as part of an
automatic shutoff system, they shall be installed in the
_____. A. return air duct ahead of any fresh-air inlet(B)
main supply air duct served by such equipment(C) fresh-
air inlet(D) main return and the main supply duct. -
answer B. shall be installed in the main supply air duct
served by equipment. UMC Section 609.0(5)
The largest fuel-burning appliance allowed in a room
100'W x 20'L x 8'H without combustion air openingsis _____
Btu.(A) 80,000 (C) 140,000(B) 100,000 (D) 320,000 -
answer 31 D. 701.2.1
Return air ducts that serve a dwelling unit shall be
permitted to be of _____ construction? A.non-combustible
B. combustible C. rated D. none of the above. - answer B.
Shall be permitted to be of combustible type UMC Section
602.2 Ex (1)
Solid fuel-burning appliances _____ be connected to a
venting system that serves a gas- or oil-burningappliance.
(A) shall (B) may (C) shall not(D) with special approval
may - answer C. appliances shall not UMC Section
802.5.5.1
Any joint obtained by joining of metal parts with alloys
that melt at temperatures higher than 840°F, but
lowerthan the melting temperature of the parts to be
