Question 1

Acetylene is used in tips having ____ preheat holes.

Accepted Answer

A)   one to three
B)   one to six
C)   three to five
D)   three to eightE) None of the above
F) B) and C)

Question 2

____________________ slag is attached solidly to the bottom edge of a cut and requires chipping and grinding to remove.

Accepted Answer

The answer of ____________________ slag is attached solidly to the...

Question 3

The kindling temperature of iron is ____.

Accepted Answer

A)   600 degrees Fahrenheit
B)   1000 degrees Fahrenheit
C)   1200 degrees Fahrenheit
D)   1600 degrees FahrenheitE) All of the above
F) A) and B)

Question 4

A molecule of propane is made up of ____.

Accepted Answer

A)   one propyl and one carbon atom
B)   one oxygen and one hydrogen atom
C)   two hydrogen and two carbon atoms
D)   eight hydrogen and three carbon atomsE) A) and C)
F) None of the above

Question 5

Most hand torches will not easily cut metal that is more than ____ inches thick.

Accepted Answer

A)   three to five
B)   five to seven
C)   seven to ten
D)   ten to twelveE) B) and C)
F) All of the above

Question 6

The purpose of the ____ valve is to prevent gases from accidentally flowing through the torch and into the wrong hose.

Accepted Answer

A)   flashback arrestor
B)   reverse flow
C)   safety release valve
D)   safety discE) None of the above
F) A) and B)

Question 7

The mixing chamber may be located in ____.

Accepted Answer

A)   the torch body or the tip
B)   a separate location in the welding shop
C)   the portable mixing machine
D)   the oxygen tubeE) All of the above
F) A) and D)

Question 8

The distance from the inner cones of the flame to the surface of the plate is known as the ____________________ distance.

Accepted Answer

The answer of The distance from the inner cones of...

Question 9

The number of preheat holes determines the ____.

Accepted Answer

A)   amount of preheat flame required
B)   type of fuel gas to be used
C)   arc length
D)   kindling temperatureE) B) and C)
F) A) and D)

Question 10

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

Accepted Answer

A)   5
B)   10
C)   15
D)   20E) None of the above
F) B) and D)

Question 11

To obtain the absolute pressure, ____.

Accepted Answer

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

Question 12

The ____________________ is the lowest temperature at which a material will burn.

Accepted Answer

The answer of The ____________________ is the lowest temperature at...

Question 13

Acetylene is produced by mixing ____.

Accepted Answer

A)   acetyl alcohol and carbon
B)   calcium carbide and water
C)   carbon and water
D)   acetyl alcohol and waterE) A) and B)
F) All of the above

Question 14

Describe how the welder should be positioned when hand cutting.

Accepted Answer

When making a cut with a hand torch, it ...

Question 15

A homogeneous mixture of 50% acetylene and 50% oxygen has a burn rate of ____ feet per second.

Accepted Answer

A)   2.7
B)   12.7
C)   22.7
D)   32.7E) A) and B)
F) A) and C)

Question 16

To start a cut on the edge of a plate, ____.

Accepted Answer

A)   hold the torch at a 45 degree angle
B)   hold the torch at a right angle or pointed slightly away from the edge
C)   point the torch toward the edge
D)   hold the torch at a 10 degree angle, pointed away from the edgeE) B) and D)
F) A) and D)

Question 17

Explain the procedure for testing leaks around a valve stem.

Accepted Answer

To test leaks around a valve stem, set t...

Question 18

If an excessive amount of preheat flame is used, ____.

Accepted Answer

A)   the cutting stream may gouge the side of the cut
B)   the top edge may be melted or rounded off
C)   the cut may be incomplete
D)   the sides of the kerf may be dishedE) A) and D)
F) A) and C)

Question 19

Most fuel gases used for welding are ____________________.

Accepted Answer

The answer of Most fuel gases used for welding are...

Question 20

What is the finished flame product of reducing oxyhydrogen?

Accepted Answer

A)   Carbon dioxide
B)   Water
C)   Carbon monoxide
D)   Hydrogen peroxideE) None of the above
F) B) and C)

Exam 7: Flame Cutting Equipment, Setup, and Operation

The ____________________ is the lowest temperature at which a material will burn.

Correct AnswerverifiedShow Answer

Acetylene is used in tips having ____ preheat holes.

Correct AnswerverifiedShow Answer

If an excessive amount of preheat flame is used, ____.

Correct AnswerverifiedShow Answer

What is the finished flame product of reducing oxyhydrogen?

Correct AnswerverifiedShow Answer

The mixing chamber may be located in ____.

Correct AnswerverifiedShow Answer

Most fuel gases used for welding are ____________________.

Correct AnswerverifiedShow Answer

____________________ slag is attached solidly to the bottom edge of a cut and requires chipping and grinding to remove.

Correct AnswerverifiedShow Answer

To start a cut on the edge of a plate, ____.

Correct AnswerverifiedShow Answer

The purpose of the ____ valve is to prevent gases from accidentally flowing through the torch and into the wrong hose.

Correct AnswerverifiedShow Answer

A molecule of propane is made up of ____.

Correct AnswerverifiedShow Answer

Explain the procedure for testing leaks around a valve stem.

Correct AnswerverifiedTo test leaks around a valve stem, set t...View AnswerShow Answer

Acetylene is produced by mixing ____.

Correct AnswerverifiedShow Answer

A homogeneous mixture of 50% acetylene and 50% oxygen has a burn rate of ____ feet per second.

Correct AnswerverifiedShow Answer

The number of preheat holes determines the ____.

Correct AnswerverifiedShow Answer

Most hand torches will not easily cut metal that is more than ____ inches thick.

Correct AnswerverifiedShow Answer

The kindling temperature of iron is ____.

Correct AnswerverifiedShow Answer

The distance from the inner cones of the flame to the surface of the plate is known as the ____________________ distance.

Correct AnswerverifiedShow Answer

Describe how the welder should be positioned when hand cutting.

Correct AnswerverifiedWhen making a cut with a hand torch, it ...View AnswerShow Answer

To obtain the absolute pressure, ____.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
To test leaks around a valve stem, set t...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
When making a cut with a hand torch, it ...
View Answer

Correct Answer
verified

Correct Answer
verified