PIPEFITTER NCCER FINAL EXAM ACTUAL QUESTIONS AND
ANSWERS GRADED A+
✔✔What is the travel on a rolling offset that has a Run of 18'', a roll 24'', and a height of
12''
A) 29 3/8
B) 32 5/16
C) 34 15/16
D) 38 9/16 - ✔✔C
✔✔Which of the following is a quick opening valve?
A) Globe
B) Needle
C) Butterfly
D) Gate - ✔✔C
✔✔Find the lowest common denominator for 1/8 and 1/2
A) 3
B) 5
C) 7
D) 8 - ✔✔D
✔✔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 - ✔✔B
✔✔The movement of pipe that is caused by an increase in temperature is called
A) Hot spring
B) Thermal expansion
C) Heat swelling
D) Pipe stretching - ✔✔B
✔✔A cold spring relieves
A) Cavitation
B) Water hammer
C) Thermal expansion
D) Tension - ✔✔C
✔✔How many feet apart must oxygen and fuel gas cylinders be stored, unless there is
a 5 ft
high, 30 minute burn rated wall between them?
,A) 5
B) 10
C) 15
D) 20 - ✔✔D
✔✔When performing a line break, first?
A) Break the bolts down & away from you
B) Loosen each bolt a little at a time
C) Break the bolts closest to you
D) Loosen bolts in a cross over pattern - ✔✔A
✔✔A pipe nipple is any length of threaded pipe that is shorter than
A) 12''
B) 13''
C) 14''
D) 15'' - ✔✔A
✔✔What is the reference angle if the hypotenuse of a right triangle is 36'' and its
adjacent
side is 14''. ( pipefitters blue book)
A) 79 degrees
B) 67 degrees
C) 23 degrees
D) 21 degrees - ✔✔B
✔✔In piping systems, ball joints are installed to allow for?
A) Expansion and Contraction
C) Pressure Relief
B) Chemical Absorption
D) Open & Closing - ✔✔A
✔✔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 - ✔✔A
✔✔Ground fault circuit interrupters SHOULD be located
A) Closest to the power tool
B) At the source of power
C) On individual extension cords
D) On cords with only 3 prong connections - ✔✔D
, ✔✔What is the most important hazardous condition in or around an excavation?
A) Falls
B) Water
C) Cave-In
D) Vibration - ✔✔C
✔✔What happens when a misaligned pipe flange is bolted up to an aligned pump's
suction
flange ?
A) The speed of the motor will increase.
B) The pump and motor will be in alignment.
C) The speed of the motor will decrease.
D) The pump and motor will be out of alignment. - ✔✔D
✔✔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 - ✔✔D
✔✔In relation to welding HAZ stands for
A) Health activated zone
B) Heat affected zone
C) Hazard communications
D) High altitude zone - ✔✔B
✔✔Expansion joints allow
A) The pipe line to be easily dismantled
B) For linear expansion and contraction of pipe lines
C) Easy access to flange connections
D) Access to unclog the line - ✔✔B
✔✔Level glasses are also called
A) Sight glasses
B) Eye glasses
C) Inspection ports
D) Spirit viles - ✔✔D
✔✔Bending pipe allows the process to
A) Coat less
B) Heat up more
C) Be stopped
D) Flow more freely - ✔✔D
ANSWERS GRADED A+
✔✔What is the travel on a rolling offset that has a Run of 18'', a roll 24'', and a height of
12''
A) 29 3/8
B) 32 5/16
C) 34 15/16
D) 38 9/16 - ✔✔C
✔✔Which of the following is a quick opening valve?
A) Globe
B) Needle
C) Butterfly
D) Gate - ✔✔C
✔✔Find the lowest common denominator for 1/8 and 1/2
A) 3
B) 5
C) 7
D) 8 - ✔✔D
✔✔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 - ✔✔B
✔✔The movement of pipe that is caused by an increase in temperature is called
A) Hot spring
B) Thermal expansion
C) Heat swelling
D) Pipe stretching - ✔✔B
✔✔A cold spring relieves
A) Cavitation
B) Water hammer
C) Thermal expansion
D) Tension - ✔✔C
✔✔How many feet apart must oxygen and fuel gas cylinders be stored, unless there is
a 5 ft
high, 30 minute burn rated wall between them?
,A) 5
B) 10
C) 15
D) 20 - ✔✔D
✔✔When performing a line break, first?
A) Break the bolts down & away from you
B) Loosen each bolt a little at a time
C) Break the bolts closest to you
D) Loosen bolts in a cross over pattern - ✔✔A
✔✔A pipe nipple is any length of threaded pipe that is shorter than
A) 12''
B) 13''
C) 14''
D) 15'' - ✔✔A
✔✔What is the reference angle if the hypotenuse of a right triangle is 36'' and its
adjacent
side is 14''. ( pipefitters blue book)
A) 79 degrees
B) 67 degrees
C) 23 degrees
D) 21 degrees - ✔✔B
✔✔In piping systems, ball joints are installed to allow for?
A) Expansion and Contraction
C) Pressure Relief
B) Chemical Absorption
D) Open & Closing - ✔✔A
✔✔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 - ✔✔A
✔✔Ground fault circuit interrupters SHOULD be located
A) Closest to the power tool
B) At the source of power
C) On individual extension cords
D) On cords with only 3 prong connections - ✔✔D
, ✔✔What is the most important hazardous condition in or around an excavation?
A) Falls
B) Water
C) Cave-In
D) Vibration - ✔✔C
✔✔What happens when a misaligned pipe flange is bolted up to an aligned pump's
suction
flange ?
A) The speed of the motor will increase.
B) The pump and motor will be in alignment.
C) The speed of the motor will decrease.
D) The pump and motor will be out of alignment. - ✔✔D
✔✔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 - ✔✔D
✔✔In relation to welding HAZ stands for
A) Health activated zone
B) Heat affected zone
C) Hazard communications
D) High altitude zone - ✔✔B
✔✔Expansion joints allow
A) The pipe line to be easily dismantled
B) For linear expansion and contraction of pipe lines
C) Easy access to flange connections
D) Access to unclog the line - ✔✔B
✔✔Level glasses are also called
A) Sight glasses
B) Eye glasses
C) Inspection ports
D) Spirit viles - ✔✔D
✔✔Bending pipe allows the process to
A) Coat less
B) Heat up more
C) Be stopped
D) Flow more freely - ✔✔D
