NCCER PLUMBING LEVEL 1 EXAM
QUESTIONS WITH CORRECT EXPLAINED
ANSWERS || 100% GUARANTEED PASS!!
<RECENT VERSION>
1. Plumber - ANSWER ✔ One who installs or repairs plumbing systems and
fixtures.
2. Plumbing - ANSWER ✔ According to the Nations Standard Plumbing
Code, it is "the practice, materials, and fixtures within or adjacent to any
building structure or conveyance, used in the installation, maintenance,
extension, alteration, and removal of all piping, plumbing fixtures, plumbing
appliances, and plumbing appurtenances connected with the following: (a)
sanitary drainage systems and related vent systems; (b) storm water drainage
facilities and venting systems; (c) public or private potable water supply
systems; (d) the initial connection to a potable water supply upstream of any
required backflow prevention devices and the final connection that
discharges indirectly into a public or private disposal system; € medical gas
and medical vacuum systems; (f) indirect waste piping, including
refrigeration and air conditioning drainage; and (g) liquid waste or sewage,
an water supply, of any premises to their connection with the approved water
supply system or to an acceptable disposal facility."
3. Plumbum - ANSWER ✔ Latin word for Lead
4. Polyvinyl Chloride (PVC) - ANSWER ✔ A thermoplastic material
frequently used in tubing for cold water systems and the first type of plastic
approved for use in plumbing.
,5. Fitting Allowance- ANSWER ✔
The distance from the end of the pipe that goes into a fitting to the center of
the fitting.
6. Galvanized- ANSWER ✔
steel that has been coated with zinc for increased resistance to rust
7. Grooved pipe- ANSWER ✔
A method for connecting piping systems using a groove installed in the pipe.
Eliminates the need for threading, flanging or welding when making
connections.
8. Make up- ANSWER ✔
The amount by which the end of the pipe penetrates a fitting.
9. Malleable Iron- ANSWER ✔
Iron that has been toughened by gradual heating or slow cooling
10.Nipple- ANSWER ✔
A short length of pipe that is used to join fittings. It is usually less than 12"
long and has male threads on both ends.
11.Pitch- ANSWER ✔
The number of threads per inch on threaded pipe and other objects.
,12.Stock- ANSWER ✔
A tool used to hold and turn dies when cutting external threads.
13.The minimum standards for training programs in the United States are set by
- ANSWER ✔ Office of Apprenticeship
14.Participants in an NCCER training program receive all of the following
except - ANSWER ✔ Certification as a master plumber
15.The non-profit_____________developed a system in 2000 they will certify a
building as "green" meaning it is energy efficient - ANSWER ✔ United
States Green Building Council
16.Suggested national plumbing standards are called - ANSWER ✔ Model
codes
17.Your supervisor points out that you forgot to complete a step in the assembly
of a drain in a DWV system. One of the apprentices that you are supervising
was a he person installing the drain. The responsible action is to - ANSWER
✔ Take responsibility for the work done under your supervision
18.People who develop, design, manufacture, and test mechanical devices are
called - ANSWER ✔ Mechanical engineers
19.The pipe from the water main, water meter, water supply system or other
approved source of water supply,to the building or structure - ANSWER ✔
Water service pipe
20.Any pipe or fitting which makes angle of more than 45° with the vertical -
ANSWER ✔ Horizontal pipe
21.The length of a pipe along the centerline of the pipe and fittings - ANSWER
✔ Developed length
22.For applicability requirements of the plumbing code, refer to: - ANSWER ✔
The plumbing code 102.1
, 23.The provisions of the plumbing shall apply to: - ANSWER ✔ Installations,
alterations and repairs, replacements - 101.2
24.The provisions of the plumbing code shall NOT apply to... - ANSWER ✔
Gas fired water heater, water heater venting systems, fuel gas piping
25.What is the minimum size of a building sewer? - ANSWER ✔ 4 inches
T710.1 (1) b
26.Minimum fall shall not be less than _____ per foot for a 2 inch pipe or
_________ per foot for a 4 inch pipe. - ANSWER ✔ 1/4":1/8". T704.1
27.A pipe or a fitting which makes an angle of not more than 45° with the
vertical is considered - ANSWER ✔ Vertical pipe. 202- definitions
28.Cleanouts in 4 inch building sewer shall not be located more than ____ft.
apart - ANSWER ✔ 100 ft. 708.3 .2
29.Size of cleanouts for a 4 inch pipe or larger may be served by a _______inch
clean out - ANSWER ✔ 4". 708.7
30.Size of cleanouts for less than a 4 inch pipe ---- 4 inch, 2 inch, size of pipe or
3 inch? - ANSWER ✔ Size of pipe 708.7
31.Waste and soil pipe leaving a building shall have an earth cover ______
inches - ANSWER ✔ 3 inches. 305.6.1
32.A manhole cover in a flood hazard zone (a zone) shall be sealed unless -
ANSWER ✔ The manhole is elevated above base flood elevation 309.2#6
33.Temporary toilet facilities need not be on site for crews on a job site for no
more then which of the following? - ANSWER ✔ One day 311.1
34.A student must complete_______hours of OJL per year, according to the
office of Apprenticeship - ANSWER ✔ 2000
35.___________is the highest level of skill a craftsman can become in their
craft profession - ANSWER ✔ Master craftsman
QUESTIONS WITH CORRECT EXPLAINED
ANSWERS || 100% GUARANTEED PASS!!
<RECENT VERSION>
1. Plumber - ANSWER ✔ One who installs or repairs plumbing systems and
fixtures.
2. Plumbing - ANSWER ✔ According to the Nations Standard Plumbing
Code, it is "the practice, materials, and fixtures within or adjacent to any
building structure or conveyance, used in the installation, maintenance,
extension, alteration, and removal of all piping, plumbing fixtures, plumbing
appliances, and plumbing appurtenances connected with the following: (a)
sanitary drainage systems and related vent systems; (b) storm water drainage
facilities and venting systems; (c) public or private potable water supply
systems; (d) the initial connection to a potable water supply upstream of any
required backflow prevention devices and the final connection that
discharges indirectly into a public or private disposal system; € medical gas
and medical vacuum systems; (f) indirect waste piping, including
refrigeration and air conditioning drainage; and (g) liquid waste or sewage,
an water supply, of any premises to their connection with the approved water
supply system or to an acceptable disposal facility."
3. Plumbum - ANSWER ✔ Latin word for Lead
4. Polyvinyl Chloride (PVC) - ANSWER ✔ A thermoplastic material
frequently used in tubing for cold water systems and the first type of plastic
approved for use in plumbing.
,5. Fitting Allowance- ANSWER ✔
The distance from the end of the pipe that goes into a fitting to the center of
the fitting.
6. Galvanized- ANSWER ✔
steel that has been coated with zinc for increased resistance to rust
7. Grooved pipe- ANSWER ✔
A method for connecting piping systems using a groove installed in the pipe.
Eliminates the need for threading, flanging or welding when making
connections.
8. Make up- ANSWER ✔
The amount by which the end of the pipe penetrates a fitting.
9. Malleable Iron- ANSWER ✔
Iron that has been toughened by gradual heating or slow cooling
10.Nipple- ANSWER ✔
A short length of pipe that is used to join fittings. It is usually less than 12"
long and has male threads on both ends.
11.Pitch- ANSWER ✔
The number of threads per inch on threaded pipe and other objects.
,12.Stock- ANSWER ✔
A tool used to hold and turn dies when cutting external threads.
13.The minimum standards for training programs in the United States are set by
- ANSWER ✔ Office of Apprenticeship
14.Participants in an NCCER training program receive all of the following
except - ANSWER ✔ Certification as a master plumber
15.The non-profit_____________developed a system in 2000 they will certify a
building as "green" meaning it is energy efficient - ANSWER ✔ United
States Green Building Council
16.Suggested national plumbing standards are called - ANSWER ✔ Model
codes
17.Your supervisor points out that you forgot to complete a step in the assembly
of a drain in a DWV system. One of the apprentices that you are supervising
was a he person installing the drain. The responsible action is to - ANSWER
✔ Take responsibility for the work done under your supervision
18.People who develop, design, manufacture, and test mechanical devices are
called - ANSWER ✔ Mechanical engineers
19.The pipe from the water main, water meter, water supply system or other
approved source of water supply,to the building or structure - ANSWER ✔
Water service pipe
20.Any pipe or fitting which makes angle of more than 45° with the vertical -
ANSWER ✔ Horizontal pipe
21.The length of a pipe along the centerline of the pipe and fittings - ANSWER
✔ Developed length
22.For applicability requirements of the plumbing code, refer to: - ANSWER ✔
The plumbing code 102.1
, 23.The provisions of the plumbing shall apply to: - ANSWER ✔ Installations,
alterations and repairs, replacements - 101.2
24.The provisions of the plumbing code shall NOT apply to... - ANSWER ✔
Gas fired water heater, water heater venting systems, fuel gas piping
25.What is the minimum size of a building sewer? - ANSWER ✔ 4 inches
T710.1 (1) b
26.Minimum fall shall not be less than _____ per foot for a 2 inch pipe or
_________ per foot for a 4 inch pipe. - ANSWER ✔ 1/4":1/8". T704.1
27.A pipe or a fitting which makes an angle of not more than 45° with the
vertical is considered - ANSWER ✔ Vertical pipe. 202- definitions
28.Cleanouts in 4 inch building sewer shall not be located more than ____ft.
apart - ANSWER ✔ 100 ft. 708.3 .2
29.Size of cleanouts for a 4 inch pipe or larger may be served by a _______inch
clean out - ANSWER ✔ 4". 708.7
30.Size of cleanouts for less than a 4 inch pipe ---- 4 inch, 2 inch, size of pipe or
3 inch? - ANSWER ✔ Size of pipe 708.7
31.Waste and soil pipe leaving a building shall have an earth cover ______
inches - ANSWER ✔ 3 inches. 305.6.1
32.A manhole cover in a flood hazard zone (a zone) shall be sealed unless -
ANSWER ✔ The manhole is elevated above base flood elevation 309.2#6
33.Temporary toilet facilities need not be on site for crews on a job site for no
more then which of the following? - ANSWER ✔ One day 311.1
34.A student must complete_______hours of OJL per year, according to the
office of Apprenticeship - ANSWER ✔ 2000
35.___________is the highest level of skill a craftsman can become in their
craft profession - ANSWER ✔ Master craftsman
