Question 1

​____________________ produces only a primary combustion flame, unlike hydrocarbon gases, which have both primary and secondary combustion.

Accepted Answer

The answer of ​____________________ produces only a primary combustion flame,...

Question 2

To obtain the absolute pressure, ____.

Accepted Answer

A)   read the gauge pressure
B)   add the atmospheric pressure to the gauge pressure
C)   subtract the atmospheric pressure from the gauge pressure
D)   multiply the atmospheric pressure by the gauge pressure

Question 3

The ____ pressure gauge shows the pressure at the regulator.

Accepted Answer

A)   working
B)   cylinder
C)   two-stage
D)   constant

Question 4

What are the factors that affect the accuracy of fuel-gas flame temperature and heat readings?
​

Accepted Answer

The data available for fuel-gas flame ...

Question 5

When taping hoses together, the hoses should be wrapped for about ____ in.out of every ____ in.

Accepted Answer

A)   one, five
B)   two, ten
C)   two, twelve
D)   five, ten

Question 6

A safety release valve is made up of a small ball held tightly against a(n) ____________________ by a spring.

Accepted Answer

The answer of A safety release valve is made up...

Question 7

When mixing oxygen and fuel gas, one method uses equal or balanced pressure and mixes gases in a(n)  ____.

Accepted Answer

A)   mixing chamber
B)   injector chamber
C)   fuel injector
D)   injector mixer

Question 8

When mixing oxygen and fuel gas, one method uses a higher oxygen pressure and mixes gases in a(n)  ____.

Accepted Answer

A)   mixing chamber
B)   injector chamber
C)   fuel injector
D)   injector mixer

Question 9

____ seal tips must be tightened with a wrench.

Accepted Answer

A)   O-ring
B)   Gasket
C)   Metal-to-metal
D)   Rubber

Question 10

​Of the following fuel gases, which has the fastest burning velocity?

Accepted Answer

A)   ​Acetylene
B)   ​Natural gas
C)   ​Propane
D)   ​Hydrogen

Question 11

How does a regulator work?

Accepted Answer

A regulator works by holding the forces ...

Question 12

In a two-stage regulator, the first spring ____.

Accepted Answer

A)   is adjusted like other regulators
B)   can be larger, allowing a greater flow
C)   is preset at the factory to reduce pressure to 225 psig
D)   has to control a maximum pressure of only around 225 psig

Question 13

Most welding hoses used today are molded together as one piece and are referred to as ____________________ hose.

Accepted Answer

The answer of Most welding hoses used today are molded...

Question 14

​The heat produced by the secondary flame of an MPS gas is about ____ the heat of acetylene.

Accepted Answer

A)   ​half
B)   ​the same as
C)   ​twice
D)   ​three times

Question 15

The ____________________ inside the regulator gauge is bent in the shape of the letter C.

Accepted Answer

The answer of The ____________________ inside the regulator gauge is...

Question 16

The size of a hose is the ____ of the hose.

Accepted Answer

A)   inside circumference
B)   outside circumference
C)   inside diameter
D)   outside diameter

Question 17

​The withdrawal rate of gas from a cylinder should not exceed ____ of the total cylinder capacity per hour.

Accepted Answer

A)   ​one-tenth
B)   ​one-seventh
C)   ​one-fifth
D)   ​one-third

Question 18

​The final products of all clean-burning hydrocarbon flames are ____.

Accepted Answer

A)   ​oxygen and carbon
B)   ​carbon dioxide and hydrogen
C)   ​water vapor and oxygen
D)   ​water vapor and carbon dioxide

Question 19

Oxygen manifolds must be at least ____ feet away from fuel gas manifolds.

Accepted Answer

A)   five
B)   ten
C)   fifteen
D)   twenty

Question 20

​What is the finished flame product of reducing oxyhydrogen?

Accepted Answer

A)   ​Carbon dioxide
B)   ​Water
C)   ​Carbon monoxide
D)   ​Hydrogen peroxide

Exam 31: Oxyfuel Welding and Cutting Equipment, Setup, and Operation

____ seal tips must be tightened with a wrench.

Correct AnswerverifiedShow Answer

​What is the finished flame product of reducing oxyhydrogen?

Correct AnswerverifiedShow Answer

​____________________ produces only a primary combustion flame, unlike hydrocarbon gases, which have both primary and secondary combustion.

Correct AnswerverifiedShow Answer

How does a regulator work?

Correct AnswerverifiedA regulator works by holding the forces ...View AnswerShow Answer

A safety release valve is made up of a small ball held tightly against a(n) ____________________ by a spring.

Correct AnswerverifiedShow Answer

When taping hoses together, the hoses should be wrapped for about ____ in.out of every ____ in.

Correct AnswerverifiedShow Answer

When mixing oxygen and fuel gas, one method uses a higher oxygen pressure and mixes gases in a(n) ____.

Correct AnswerverifiedShow Answer

What are the factors that affect the accuracy of fuel-gas flame temperature and heat readings? ​

Correct Answerverified​The data available for fuel-gas flame ...View AnswerShow Answer

​The withdrawal rate of gas from a cylinder should not exceed ____ of the total cylinder capacity per hour.

Correct AnswerverifiedShow Answer

Most welding hoses used today are molded together as one piece and are referred to as ____________________ hose.

Correct AnswerverifiedShow Answer

In a two-stage regulator, the first spring ____.

Correct AnswerverifiedShow Answer

When mixing oxygen and fuel gas, one method uses equal or balanced pressure and mixes gases in a(n) ____.

Correct AnswerverifiedShow Answer

​Of the following fuel gases, which has the fastest burning velocity?

Correct AnswerverifiedShow Answer

Oxygen manifolds must be at least ____ feet away from fuel gas manifolds.

Correct AnswerverifiedShow Answer

The ____________________ inside the regulator gauge is bent in the shape of the letter C.

Correct AnswerverifiedShow Answer

The size of a hose is the ____ of the hose.

Correct AnswerverifiedShow Answer

To obtain the absolute pressure, ____.

Correct AnswerverifiedShow Answer

The ____ pressure gauge shows the pressure at the regulator.

Correct AnswerverifiedShow Answer

​The final products of all clean-burning hydrocarbon flames are ____.

Correct AnswerverifiedShow Answer

​The heat produced by the secondary flame of an MPS gas is about ____ the heat of acetylene.

Correct AnswerverifiedShow Answer

Correct Answer
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What is the finished flame product of reducing oxyhydrogen?

Correct Answer
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____________________ produces only a primary combustion flame, unlike hydrocarbon gases, which have both primary and secondary combustion.

Correct Answer
verified

Correct Answer
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A regulator works by holding the forces ...
View Answer

Correct Answer
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When taping hoses together, the hoses should be wrapped for about in.out of every in.

Correct Answer
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Correct Answer
verified

What are the factors that affect the accuracy of fuel-gas flame temperature and heat readings?

Correct Answer
verified

The data available for fuel-gas flame ...
View Answer

The withdrawal rate of gas from a cylinder should not exceed ____ of the total cylinder capacity per hour.

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Of the following fuel gases, which has the fastest burning velocity?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The final products of all clean-burning hydrocarbon flames are ____.

Correct Answer
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The heat produced by the secondary flame of an MPS gas is about ____ the heat of acetylene.

Correct Answer
verified