Pipefitter NCCER Test Questions And Answers
Verified 100% Correct
What must be done to MOST socket welded valves before being welded into
place?
A) Close the valve completely
B) Close the valve halfway
C) Open the valve completely
D) Cover the end of the valve - ANSWER -C
What is the length of pipe required to fabricate a 6''diameter schedule 40 pipe
spool
with one class 150# RFWN flange on one end, and one class 300# RFWN flange
on the
other end, with a face-to-face measurement of 18 1/2'' (assume a 1/8 welder gap)
A) 10 11/16
B) 10 7/8
C) 12 5/16
D) 12 1/2 - ANSWER -B
What is the standard torqueing valve of the Victaulic coupling bolts?
A) No torquing is required
B) 40 inch pounds
C) 60 inch pounds
D) 80 inch pounds - ANSWER -A
At what dimension does a pipe begin to be measured by the outside diameter?
A) 8 inches
B) 10 inches
C) 12 inches
D) 14 inches - ANSWER -D
What is the 4
,th ordinate cutback measurement for a 3'' diameter type 3 dummy leg on a
6'' elbow
A) 12 7/16
B) 10 3/16
C) 8 11/16
D) 6 11/16 - ANSWER -B
What is the ratio of the distance that the ladder should be from the base of the wall
to
the height where the ladder meets the wall.
A) 1/2
B) 1/3
C) 1/4
D) 1/5 - ANSWER -C
Trenches MUST be designed, excavated, and shored according to
A) ASME standards C) Company standards
B) API standards D) OSHA standards - ANSWER -D
The angles of any triangle add up to
A) 45 degrees
B) 90
C) 100
D) 180 - ANSWER -D
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 - ANSWER -C
Which of the following is a quick opening valve?
A) Globe
, B) Needle
C) Butterfly
D) Gate - ANSWER -C
Find the lowest common denominator for 1/8 and 1/2
A) 3
B) 5
C) 7
D) 8 - ANSWER -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 - ANSWER -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 - ANSWER -B
A cold spring relieves
A) Cavitation
B) Water hammer
C) Thermal expansion
D) Tension - ANSWER -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
Verified 100% Correct
What must be done to MOST socket welded valves before being welded into
place?
A) Close the valve completely
B) Close the valve halfway
C) Open the valve completely
D) Cover the end of the valve - ANSWER -C
What is the length of pipe required to fabricate a 6''diameter schedule 40 pipe
spool
with one class 150# RFWN flange on one end, and one class 300# RFWN flange
on the
other end, with a face-to-face measurement of 18 1/2'' (assume a 1/8 welder gap)
A) 10 11/16
B) 10 7/8
C) 12 5/16
D) 12 1/2 - ANSWER -B
What is the standard torqueing valve of the Victaulic coupling bolts?
A) No torquing is required
B) 40 inch pounds
C) 60 inch pounds
D) 80 inch pounds - ANSWER -A
At what dimension does a pipe begin to be measured by the outside diameter?
A) 8 inches
B) 10 inches
C) 12 inches
D) 14 inches - ANSWER -D
What is the 4
,th ordinate cutback measurement for a 3'' diameter type 3 dummy leg on a
6'' elbow
A) 12 7/16
B) 10 3/16
C) 8 11/16
D) 6 11/16 - ANSWER -B
What is the ratio of the distance that the ladder should be from the base of the wall
to
the height where the ladder meets the wall.
A) 1/2
B) 1/3
C) 1/4
D) 1/5 - ANSWER -C
Trenches MUST be designed, excavated, and shored according to
A) ASME standards C) Company standards
B) API standards D) OSHA standards - ANSWER -D
The angles of any triangle add up to
A) 45 degrees
B) 90
C) 100
D) 180 - ANSWER -D
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 - ANSWER -C
Which of the following is a quick opening valve?
A) Globe
, B) Needle
C) Butterfly
D) Gate - ANSWER -C
Find the lowest common denominator for 1/8 and 1/2
A) 3
B) 5
C) 7
D) 8 - ANSWER -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 - ANSWER -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 - ANSWER -B
A cold spring relieves
A) Cavitation
B) Water hammer
C) Thermal expansion
D) Tension - ANSWER -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
