PLUMBING RED SEAL TEST FINAL EXAM 2
VERSIONS WITH STUDY GUIDE 2026 BANK
CURRENTLY TESTING EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS /ALREADY
GRADED A+
A private water supplied cistern is fitted with a 3/4" make-
up water pipe supplied by a municipal system. What size
air gap would be required?
A. 3/4"
B. 1.5"
C. 1"
D. 2" - ....ANSWER...B. 1.5"
Which is not a hot water heating piping system?
A. two pipe direct return
B. One pipe gravity return
,C. Series loop
D. Two pipe reverse return - ....ANSWER...B. One pipe
gravity return
HWT is a common abbreviation for?
A. Holding water tank
B. Heat, Water, Temperature
C. Hot water faucet
D. Water heater - ....ANSWER...D. Water heater
Which article or subsection of the NPC deals expansion
and contraction?
A. 2.3.5
B. 2.3.3.9
C. 2.4.7
D. 2.4.6 - ....ANSWER...B. 2.3.3.9
,When using a clamp-on ammeter to measure the current
draw of a pump motor, the clamp must only be around one
conductor.
True or False? - ....ANSWER...True
A drain valve should be installed on a meter bypass
installation when the service exceeds ___ inch trade size.
A. 2
B. 2.5
C. 3
D. 1 - ....ANSWER...D. 1
When the building drain (BD) is located below the level of
the adjoining street, which device is installed inside the
building?
A. A backflow preventer on the service
B. A normally closed backwater valve on the BD
C. A normally open backwater valve on the weeping tile
, D. A normally open backwater valve on the BD -
....ANSWER...D. A normally open backwater valve on the
BD
When calculating the required infiltration area for a
disposal field, it is recommended to use worksheet _______
to assist with the calculations.
A. B
B. E
C. F
D. H - ....ANSWER...C. F
When using a direct flush valve on a urinal it must be at
least ___inch.
A. 5/8
B. 1/2
C. 3/4
D. 1 - ....ANSWER...C. 3/4
VERSIONS WITH STUDY GUIDE 2026 BANK
CURRENTLY TESTING EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS /ALREADY
GRADED A+
A private water supplied cistern is fitted with a 3/4" make-
up water pipe supplied by a municipal system. What size
air gap would be required?
A. 3/4"
B. 1.5"
C. 1"
D. 2" - ....ANSWER...B. 1.5"
Which is not a hot water heating piping system?
A. two pipe direct return
B. One pipe gravity return
,C. Series loop
D. Two pipe reverse return - ....ANSWER...B. One pipe
gravity return
HWT is a common abbreviation for?
A. Holding water tank
B. Heat, Water, Temperature
C. Hot water faucet
D. Water heater - ....ANSWER...D. Water heater
Which article or subsection of the NPC deals expansion
and contraction?
A. 2.3.5
B. 2.3.3.9
C. 2.4.7
D. 2.4.6 - ....ANSWER...B. 2.3.3.9
,When using a clamp-on ammeter to measure the current
draw of a pump motor, the clamp must only be around one
conductor.
True or False? - ....ANSWER...True
A drain valve should be installed on a meter bypass
installation when the service exceeds ___ inch trade size.
A. 2
B. 2.5
C. 3
D. 1 - ....ANSWER...D. 1
When the building drain (BD) is located below the level of
the adjoining street, which device is installed inside the
building?
A. A backflow preventer on the service
B. A normally closed backwater valve on the BD
C. A normally open backwater valve on the weeping tile
, D. A normally open backwater valve on the BD -
....ANSWER...D. A normally open backwater valve on the
BD
When calculating the required infiltration area for a
disposal field, it is recommended to use worksheet _______
to assist with the calculations.
A. B
B. E
C. F
D. H - ....ANSWER...C. F
When using a direct flush valve on a urinal it must be at
least ___inch.
A. 5/8
B. 1/2
C. 3/4
D. 1 - ....ANSWER...C. 3/4
