Pipefitter NCCER Test Questions With
Complete Solutions
A 4-inch lateral riser is to be fabricated for a 6-inch
pipe. How many ordinate lines will
be needed to lay out this cut ?
A) 32
B) 16
C) 8
D) 4 Correct Answers C
A cold spring relieves
A) Cavitation
B) Water hammer
C) Thermal expansion
D) Tension Correct Answers C
A length of 1 1/2-inch pipe is to be cut to run
between two 90-drgree 6,000# threaded
fittings. The fittings measure 7 ft 2 1/4 inches
center-to-center. What is the cut length of
the pipe?
A) 6 feet 8 5/8 inches
B) 6 feet 8 3/4 inches
C) 6 feet 10 5/8 inches
D) 7 feet 2 1/4 inches Correct Answers C
A pipe nipple is any length of threaded pipe that is
shorter than
A) 12''
,B) 13''
C) 14''
D) 15'' Correct Answers A
A piping drawing that shows both the side view and
the top view of a piping system is
A) Elevation
B) Isometric
C) Plan
D) Double-line Correct Answers B
A plot shows the:
A) Framework of a building
B) Schematic diagram of a system
C) Location of a building on a piece of property
D) Locations of equipment within a system Correct
Answers C
A plug valve is used to.
A) Start and stop flow
B) Regulate flow
C) Prevent reverse flow
D) Divert flow Correct Answers A
A pretest field inspection includes all of the
following EXCEPT the
A) Piping system matches the drawings
B) Piping components match the specifications
C) Proper gaskets are Installed
, D) Vent at the low point of the system Correct
Answers D
A threading machine equipped with NPT dies is
designed to cut which type of threads.
A) Machine bolt threads
B) National pipe threads
C) New pipe threads
D) Non-plumbed threads Correct Answers B
A vertical pipe filled with 10'' of water has a head
pressure of
A) 4.25 psi
B) 4.33 psi
C) 4.38 psi
D) 4.5 psi Correct Answers B
All of the following drawing dimensions are used to
determine the overall length of Run
of a pipe EXCEPT.
A) Pipe diameter
B) Center-to-center
C) Face-to-face
D) Center-to-face Correct Answers A
All of the following types of pipe are thermoplastic
EXCEPT.
A) Polyvinyl Chloride (PVC)
B) Fiberglass
C) Polyethylene
Complete Solutions
A 4-inch lateral riser is to be fabricated for a 6-inch
pipe. How many ordinate lines will
be needed to lay out this cut ?
A) 32
B) 16
C) 8
D) 4 Correct Answers C
A cold spring relieves
A) Cavitation
B) Water hammer
C) Thermal expansion
D) Tension Correct Answers C
A length of 1 1/2-inch pipe is to be cut to run
between two 90-drgree 6,000# threaded
fittings. The fittings measure 7 ft 2 1/4 inches
center-to-center. What is the cut length of
the pipe?
A) 6 feet 8 5/8 inches
B) 6 feet 8 3/4 inches
C) 6 feet 10 5/8 inches
D) 7 feet 2 1/4 inches Correct Answers C
A pipe nipple is any length of threaded pipe that is
shorter than
A) 12''
,B) 13''
C) 14''
D) 15'' Correct Answers A
A piping drawing that shows both the side view and
the top view of a piping system is
A) Elevation
B) Isometric
C) Plan
D) Double-line Correct Answers B
A plot shows the:
A) Framework of a building
B) Schematic diagram of a system
C) Location of a building on a piece of property
D) Locations of equipment within a system Correct
Answers C
A plug valve is used to.
A) Start and stop flow
B) Regulate flow
C) Prevent reverse flow
D) Divert flow Correct Answers A
A pretest field inspection includes all of the
following EXCEPT the
A) Piping system matches the drawings
B) Piping components match the specifications
C) Proper gaskets are Installed
, D) Vent at the low point of the system Correct
Answers D
A threading machine equipped with NPT dies is
designed to cut which type of threads.
A) Machine bolt threads
B) National pipe threads
C) New pipe threads
D) Non-plumbed threads Correct Answers B
A vertical pipe filled with 10'' of water has a head
pressure of
A) 4.25 psi
B) 4.33 psi
C) 4.38 psi
D) 4.5 psi Correct Answers B
All of the following drawing dimensions are used to
determine the overall length of Run
of a pipe EXCEPT.
A) Pipe diameter
B) Center-to-center
C) Face-to-face
D) Center-to-face Correct Answers A
All of the following types of pipe are thermoplastic
EXCEPT.
A) Polyvinyl Chloride (PVC)
B) Fiberglass
C) Polyethylene
