Md Hvac Masters Actual Test Paper With Verified Answers

MD HVAC MASTERS ACTUAL TEST PAPER
WITH VERIFIED ANSWERS

●● 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)