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NCCER BOILERMAKER EXAM AND PRACTICE EXAM
NEWEST ACTUAL EXAM COMPLETE 180 QUESTIONS
AND CORRECT DETAILED ANSWERS VERIFIED
EXAM!!! (VERIFIED ANSWERS) |ALREADY GRADED
A+||NEWEST EXAM!!!!
A good safety practice is - ANSWER-Writing HOT on hot
metal before leaving it unattended
When pure oxygen is combined with fuel gases, the pure
oxygen produces - ANSWER-A high temperature flame
needed for flame cutting
The smallest standard oxygen cylinder holds about ____
cubic feet of oxygen. - ANSWER-85
Acetylene gas must be withdrawn from a cylinder at an
hourly rate that does not exceed _____ of the cylinder
capacity. - ANSWER-10 percent
Safety fuse plugs in the top and bottom of an acetylene
cylinder are designed to ___. - ANSWER-release
acetylene gas in the event of a fire
methylacetylene propadiene (MAPP) gas, a liquefied fuel
used in oxyfuek cutting, burns at temperatures almost as
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high as acetylene and has the stability of ___ - ANSWER-
Propane
The amount of liquefied gas remaining in a cylinder is
determined by the ___ of the cylinder. - ANSWER-Weight
The regulators used in fuel gas cylinders are often painted
red and always have ____ on all connections. - ANSWER-
Left hand threads
The attachment on top of a fuel gas cylinder that allows
the gas to flow in only one directions is called a -
ANSWER-Check valve
The cutting tips used with liquified fuel gases must have at
least ___ preheat holes. - ANSWER-Six
When lifting oxyfuel cutting cylinders, always use a -
ANSWER-cylinder cage
To avoid injury from dirt that may be lodged in the valve
and regulator seat of a gas cylinder, always stand ___ the
valve when opening the valve to clear the regulator seat. -
ANSWER-To the side of
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When clearing debris from new oxyfuel cutting
equipment hoses, blow the hoses out
with_____. - ANSWER-Nitrogen or argon
The first step in selecting a cutting tip is to - ANSWER-
identify the thickness of the material to be cut
Before opening cylinder valves, verify that the adjusting
screws on the oxygen and fuel gas regulators are ____. -
ANSWER-Fully counterclockwise
When a cutting flame has an excess of fuel, the flame is
called a - ANSWER-Carburizing
When disassembling oxyfuel equipment, verify that all
pressure gauges read ____ before starting to take
equipment apart. - ANSWER-0
When inspecting a completed cut made with oxyfuel
cutting equipment, the drag lines of the cut should be near
___ and not very pronounced. - ANSWER-Vertical
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Once the size of a gasket or O-ring has been determined,
___ factors must be considered before choosing a gasket
or O-ring. - ANSWER-compatibility
The gasket that is made of stainless steel with a graphite
insert is the ___ gasket. - ANSWER-Spiral wound
Natural rubber has limited chemical resistance to ___. -
ANSWER-Petroleum products
The gasket material that is not recommended for water
service and has poor chemical resistance is ___. -
ANSWER-Neoprene
Which of the following substances would be compatible
with a nitrile gasket? - ANSWER-Water or alcohol
RTJ gaskets are used in ________ applications -
ANSWER-high pressure
The radius of a bolt circle is equal to ___. - ANSWER-Half
the diameter
NCCER BOILERMAKER EXAM AND PRACTICE EXAM
NEWEST ACTUAL EXAM COMPLETE 180 QUESTIONS
AND CORRECT DETAILED ANSWERS VERIFIED
EXAM!!! (VERIFIED ANSWERS) |ALREADY GRADED
A+||NEWEST EXAM!!!!
A good safety practice is - ANSWER-Writing HOT on hot
metal before leaving it unattended
When pure oxygen is combined with fuel gases, the pure
oxygen produces - ANSWER-A high temperature flame
needed for flame cutting
The smallest standard oxygen cylinder holds about ____
cubic feet of oxygen. - ANSWER-85
Acetylene gas must be withdrawn from a cylinder at an
hourly rate that does not exceed _____ of the cylinder
capacity. - ANSWER-10 percent
Safety fuse plugs in the top and bottom of an acetylene
cylinder are designed to ___. - ANSWER-release
acetylene gas in the event of a fire
methylacetylene propadiene (MAPP) gas, a liquefied fuel
used in oxyfuek cutting, burns at temperatures almost as
,2|Page
high as acetylene and has the stability of ___ - ANSWER-
Propane
The amount of liquefied gas remaining in a cylinder is
determined by the ___ of the cylinder. - ANSWER-Weight
The regulators used in fuel gas cylinders are often painted
red and always have ____ on all connections. - ANSWER-
Left hand threads
The attachment on top of a fuel gas cylinder that allows
the gas to flow in only one directions is called a -
ANSWER-Check valve
The cutting tips used with liquified fuel gases must have at
least ___ preheat holes. - ANSWER-Six
When lifting oxyfuel cutting cylinders, always use a -
ANSWER-cylinder cage
To avoid injury from dirt that may be lodged in the valve
and regulator seat of a gas cylinder, always stand ___ the
valve when opening the valve to clear the regulator seat. -
ANSWER-To the side of
,3|Page
When clearing debris from new oxyfuel cutting
equipment hoses, blow the hoses out
with_____. - ANSWER-Nitrogen or argon
The first step in selecting a cutting tip is to - ANSWER-
identify the thickness of the material to be cut
Before opening cylinder valves, verify that the adjusting
screws on the oxygen and fuel gas regulators are ____. -
ANSWER-Fully counterclockwise
When a cutting flame has an excess of fuel, the flame is
called a - ANSWER-Carburizing
When disassembling oxyfuel equipment, verify that all
pressure gauges read ____ before starting to take
equipment apart. - ANSWER-0
When inspecting a completed cut made with oxyfuel
cutting equipment, the drag lines of the cut should be near
___ and not very pronounced. - ANSWER-Vertical
, 4|Page
Once the size of a gasket or O-ring has been determined,
___ factors must be considered before choosing a gasket
or O-ring. - ANSWER-compatibility
The gasket that is made of stainless steel with a graphite
insert is the ___ gasket. - ANSWER-Spiral wound
Natural rubber has limited chemical resistance to ___. -
ANSWER-Petroleum products
The gasket material that is not recommended for water
service and has poor chemical resistance is ___. -
ANSWER-Neoprene
Which of the following substances would be compatible
with a nitrile gasket? - ANSWER-Water or alcohol
RTJ gaskets are used in ________ applications -
ANSWER-high pressure
The radius of a bolt circle is equal to ___. - ANSWER-Half
the diameter
