HVAC JOURNEYMAN EXAM 2024-2025 AND
PRACTICE EXAM 150 QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES (100%
CORRECT AND VERIFIED
Terms in this set (127)
Defects on gas piping or B. Fitting shall be replaced or repaired and retested.
fittings shall be _____.(A) UMC Section 1316.4.3
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.
Every absorption B. Slab extending not less than 3" above the adjoining
refrigerating system ground level. UMC Section 1106.2
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.
,Any part of a venting B. any part of the venting installed at an angle
system installed at an GREATER than 45 degrees is considered by this code
angle greater than 45 to be Horizontal UMC Section 802.6.1.1
degrees from the vertical
is considered by code to
be _____.(A) vertica(B)
horizontal l (C) a flat vent
(D) an offset vent
Listed transition ducts f or D. Dryers shall not exceed 6 feet in length. UMC
clothes dryers shall not Section 504.3.2.1
exceed_____ feet in length.
A.3 B.4 C.5 D.6.
Industrial product- A. Shall Be Constructed of sheet metal. UMC Section.
conveying ducts and their 5 0 6.1
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
Industrial product- A 511.2
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
, Unlisted vented gas D. clearance of an unlisted vented gas fireplace at the
fireplaces shall have a sides and the rear not less than 18". UMC Section
clearance at the sides and 908.2(B)
rear of not less than _____
inches. Is the Answer: A.
10" B. 12" C 16" D. 18".
Leaks in gas piping shall C. leaks in a gas piping shall be located with a non
be located _____.(A) with a corrosive leak detecting fluid. UMC Section 1316.4.2
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.
Condensate drain piping A. Slope of not less than 1/8" per foot. UMC Section
shall have a slope of not 309.1
less than _____ inch per foot.
A 1⁄8" B.¼" C.½" D. 1"
The minimum gauge or C. 18 Minimum Gauge note: AWG is the abbreviation
size steel wire used to for "gauge size" Table 6-7(B)
support horizontal metal
ducts 10 inches or less in
size is _____. A.14 AWG B.16
AWG C.18 AWG D.20 AWG
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