RHODE ISLAND MASTER PIPEFITTER EXAM QUESTIONS
AND ANSWERS (VERIFIED ANSWERS ALREADY GRADED
A+) LATEST UPDATE 2025/2026
Welder will get full penetration of first pass - CORRECT ANSWER
What is the purpose of the 1/8" root spacing on butt weld fitting?
22 1/2 degrees - CORRECT ANSWER What angle do you cut the pipe
for a 3 piece elbow?
Change the range of variable type - CORRECT ANSWER What is the
purpose of a transformer?
True - CORRECT ANSWER Can smaller size pipe sometimes be used
by using a larger size pump?
True - CORRECT ANSWER A pipe saddle is used to protect the pipe
insulation from damage?
AC/DC - CORRECT ANSWER At what current is a 60-11 weld rod
used?
Concentric Reducer, Reducing Tee, Reducing Elbow - CORRECT
ANSWER Name 3 weld reducing fittings.
,1.41 x run - CORRECT ANSWER What formula do you use on a 45%
offset?
To prevent a boiler from draining out - CORRECT ANSWER What is
the purpose of a Hartford Loop?
False - CORRECT ANSWER Turbulence in a heat exchanger or
thermal converter increase the heat.
Gate Valve - CORRECT ANSWER In a horizontal positioned drain
line what is the proper valve?
False - CORRECT ANSWER A flared joint and a compression joint
are the same.
Thermocouple - CORRECT ANSWER In a gas system a safety valve
responds to a
High Pressure - CORRECT ANSWER In a gas system when is welded
pipe preferred over threaded pipe?
1 1/2 the diameter - CORRECT ANSWER From the end of the fitting
to centerline what is the measurement of a STD (long Radius) 90 degree
weld elbow?
,Diameter X 3.14 - CORRECT ANSWER To find the circumference of
a pipe
1/16 - CORRECT ANSWER The space from end of pipe to shoulder of
socket weld fitting is
Feed water side against bottom of seat - CORRECT ANSWER Locate
a globe valve in a feed water system
Too much heat/wrong polarity - CORRECT ANSWER What causes
excessive weld spatter?
Protect insulation - CORRECT ANSWER Why is a saddle installed on
a pipe?
Top of Boiler - CORRECT ANSWER Where is the pressure gauge on a
boiler?
Siphon - CORRECT ANSWER What is between pressure gauge and
piping?
True - CORRECT ANSWER When threading a pipe the pipe should be
reamed before threading is started.
True - CORRECT ANSWER The O.D. of pipe stands for outside
diameter and the I.D. stands for inside diameter.
, False - CORRECT ANSWER All pipe sizes have the same wall
thickness.
False - CORRECT ANSWER It is not necessary to check the position
of the bolt holes on a set of companion flanges when making a flange
joint connection.
False - CORRECT ANSWER A ring gasket must have the bolt holes to
match the bolt hole in the flange connection.
False - CORRECT ANSWER A compression joint is also known as a
flared joint.
True - CORRECT ANSWER A welded joint is superior to a screw
joint.
True - CORRECT ANSWER Gate valves, as a rule, should be either
fully open or fully closed.
False - CORRECT ANSWER A globe valve has very little resistance to
flow.
False - CORRECT ANSWER A valve marked only 200 WOG may be
used for steam service.
AND ANSWERS (VERIFIED ANSWERS ALREADY GRADED
A+) LATEST UPDATE 2025/2026
Welder will get full penetration of first pass - CORRECT ANSWER
What is the purpose of the 1/8" root spacing on butt weld fitting?
22 1/2 degrees - CORRECT ANSWER What angle do you cut the pipe
for a 3 piece elbow?
Change the range of variable type - CORRECT ANSWER What is the
purpose of a transformer?
True - CORRECT ANSWER Can smaller size pipe sometimes be used
by using a larger size pump?
True - CORRECT ANSWER A pipe saddle is used to protect the pipe
insulation from damage?
AC/DC - CORRECT ANSWER At what current is a 60-11 weld rod
used?
Concentric Reducer, Reducing Tee, Reducing Elbow - CORRECT
ANSWER Name 3 weld reducing fittings.
,1.41 x run - CORRECT ANSWER What formula do you use on a 45%
offset?
To prevent a boiler from draining out - CORRECT ANSWER What is
the purpose of a Hartford Loop?
False - CORRECT ANSWER Turbulence in a heat exchanger or
thermal converter increase the heat.
Gate Valve - CORRECT ANSWER In a horizontal positioned drain
line what is the proper valve?
False - CORRECT ANSWER A flared joint and a compression joint
are the same.
Thermocouple - CORRECT ANSWER In a gas system a safety valve
responds to a
High Pressure - CORRECT ANSWER In a gas system when is welded
pipe preferred over threaded pipe?
1 1/2 the diameter - CORRECT ANSWER From the end of the fitting
to centerline what is the measurement of a STD (long Radius) 90 degree
weld elbow?
,Diameter X 3.14 - CORRECT ANSWER To find the circumference of
a pipe
1/16 - CORRECT ANSWER The space from end of pipe to shoulder of
socket weld fitting is
Feed water side against bottom of seat - CORRECT ANSWER Locate
a globe valve in a feed water system
Too much heat/wrong polarity - CORRECT ANSWER What causes
excessive weld spatter?
Protect insulation - CORRECT ANSWER Why is a saddle installed on
a pipe?
Top of Boiler - CORRECT ANSWER Where is the pressure gauge on a
boiler?
Siphon - CORRECT ANSWER What is between pressure gauge and
piping?
True - CORRECT ANSWER When threading a pipe the pipe should be
reamed before threading is started.
True - CORRECT ANSWER The O.D. of pipe stands for outside
diameter and the I.D. stands for inside diameter.
, False - CORRECT ANSWER All pipe sizes have the same wall
thickness.
False - CORRECT ANSWER It is not necessary to check the position
of the bolt holes on a set of companion flanges when making a flange
joint connection.
False - CORRECT ANSWER A ring gasket must have the bolt holes to
match the bolt hole in the flange connection.
False - CORRECT ANSWER A compression joint is also known as a
flared joint.
True - CORRECT ANSWER A welded joint is superior to a screw
joint.
True - CORRECT ANSWER Gate valves, as a rule, should be either
fully open or fully closed.
False - CORRECT ANSWER A globe valve has very little resistance to
flow.
False - CORRECT ANSWER A valve marked only 200 WOG may be
used for steam service.
