Hvac Journeyman Exam
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. - ANS-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. - ANS-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 - ANS-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. - ANS-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 - ANS-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 - ANS-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". - ANS-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. - ANS-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" - ANS-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 - ANS-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. - ANS-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 -
ANS-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. -
ANS-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
- ANS-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 - ANS-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 -
ANS-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 - ANS-18 D
502.0
... - ANS-19 C 1313.4
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. - ANS-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. - ANS-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 - ANS-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. - ANS-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 - ANS-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 - ANS-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". - ANS-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. - ANS-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" - ANS-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 - ANS-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. - ANS-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 -
ANS-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. -
ANS-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
- ANS-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 - ANS-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 -
ANS-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 - ANS-18 D
502.0
... - ANS-19 C 1313.4
