HVAC JOURNEYMAN EXAM
QUESTIONS AND ANSWERS
Listed transition ducts f or clothes dryers shall not exceed_____ feet in length. A.3 B.4 C.5 D.6.
✅✅correct answ-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 ✅✅correct answ-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 ✅✅correct answ-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". ✅✅correct answ-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. ✅✅correct answ-C. leaks in a gas piping shall be located with a non corrosive
leak detecting fluid. UMC Section 1316.4.2
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.
✅✅correct answ-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. ✅✅correct answ-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
✅✅correct answ-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
, Condensate drain piping shall have a slope of not less than _____ inch per foot. A 1⁄8" B.¼" C.½" D.
1" ✅✅correct answ-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 ✅✅correct answ-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. ✅✅correct answ-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 ✅✅correct answ-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. ✅✅correct answ-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 ✅✅correct answ-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 joined, is a _____ joint.(A) brazed(B) fused
(D) soldered (C) welded ✅✅correct answ-A. Is a brazed joint UMC section 2 1 2.0
A vessel or arrangement of piping or tubing in which vaporized refrigerant is liquefied by removal of
heat is a _____.(A) compressor (C) evaporator(B) generator (D) condenser ✅✅correct answ-D. A
condenser is the piping which vaporizes the refrigerant liquefied by removal of heat, UMC Section 2
0 5.0
is a _____.(A) compressor (C) evaporator(B) generator (D) condenser ✅✅correct answ-18 D 502.0
... ✅✅correct answ-19 C 1313.4
QUESTIONS AND ANSWERS
Listed transition ducts f or clothes dryers shall not exceed_____ feet in length. A.3 B.4 C.5 D.6.
✅✅correct answ-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 ✅✅correct answ-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 ✅✅correct answ-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". ✅✅correct answ-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. ✅✅correct answ-C. leaks in a gas piping shall be located with a non corrosive
leak detecting fluid. UMC Section 1316.4.2
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.
✅✅correct answ-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. ✅✅correct answ-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
✅✅correct answ-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
, Condensate drain piping shall have a slope of not less than _____ inch per foot. A 1⁄8" B.¼" C.½" D.
1" ✅✅correct answ-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 ✅✅correct answ-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. ✅✅correct answ-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 ✅✅correct answ-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. ✅✅correct answ-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 ✅✅correct answ-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 joined, is a _____ joint.(A) brazed(B) fused
(D) soldered (C) welded ✅✅correct answ-A. Is a brazed joint UMC section 2 1 2.0
A vessel or arrangement of piping or tubing in which vaporized refrigerant is liquefied by removal of
heat is a _____.(A) compressor (C) evaporator(B) generator (D) condenser ✅✅correct answ-D. A
condenser is the piping which vaporizes the refrigerant liquefied by removal of heat, UMC Section 2
0 5.0
is a _____.(A) compressor (C) evaporator(B) generator (D) condenser ✅✅correct answ-18 D 502.0
... ✅✅correct answ-19 C 1313.4
