Question 1

Pipe threads are standardized by the A.N.S. A.N.S. stands for ____.

Accepted Answer

A)   All Nominal Standard
B)   American National Standard
C)   All New Steel
D)   Apparent Nominal Standard

Question 2

For cleaning ACR copper tubing before soldering, a material that can be used is ____.

Accepted Answer

A)   steel wool
B)   carborundum cloth
C)   sand cloth
D)   nylon wool

Question 3

The type of steel pipe thread used primarily in this industry is the "tapered" thread. Why?

Accepted Answer

They produce a tight...

Question 4

Pipe threads, when used on pipe that will contain liquid or vapor under pressure, ____.

Accepted Answer

A)   are tapered
B)   should have at least seven perfect threads
C)   generally have a "V" shape
D)   All of the above.

Question 5

When soldering, by what force, the molten filler material flows between the two base metals ?

Accepted Answer

This is ca...

Question 6

Why should some refrigerant lines be insulated?

Accepted Answer

Insulation prevents ...

Question 7

When soldering, why should flux be used?

Accepted Answer

A)   It helps prevent oxidation.
B)   It helps keep pipes clean.
C)   It helps solder flow easier.
D)   All of the above are correct.

Question 8

The use of flux is always required when soldering or brazing.

Accepted Answer

A) True 
 B)False

Question 9

If a technician needed 5/8" ACR for an installation and was located near only a plumbing supply house, what size and type of pipe should he ask for?

Accepted Answer

A)   5/8" ACR.
B)   1/2" PVC.
C)   1/2" ID Copper.
D)   5/8" PVC.

Question 10

The size indicated for the diameter of ACR copper tubing is the ____.

Accepted Answer

A)   inside diameter
B)   outside diameter
C)   wall thickness
D)   None of the above. B

Question 11

When making a swage joint, what should the depth of the enlarged portion of the tube be?

Accepted Answer

It should be equal to the diameter of the original tube.

Question 12

The tubing or pipe for natural gas supply to a gas heating unit is ____________________.

Accepted Answer

The answer of The tubing or pipe for natural gas...

Question 13

When soldering, flux should be applied to ____.

Accepted Answer

A)   the male part of the joint only
B)   the female part of the joint only
C)   both the male and female parts of the joint
D)   around the mated parts A

Question 14

M is a lightweight copper and is not commonly used in our industry.

Accepted Answer

A) True 
 B)False

Question 15

In the thread specification 1/2-14 NPT, the NPT stands for ____________________.

Accepted Answer

The answer of In the thread specification 1/2-14 NPT, the...

Question 16

Match between columns
                        Premises: Caused by excessive bending and straightening of tubing.
Operation of heating and cooling tubing to make it softer.
Accomplished at temperatures under 842°F.
Operation that causes one end of a copper tube to expand at an angle for flare nut connection to system.
Accomplished at temperatures above 842°F.
Removal of burrs and rough edges from tubing.
Operation that allows two tubes of equal diameter to be joined together.

Accepted Answer

The Answer of soldering and flaring and brazing and reaming is...

Question 17

The proper type of flame from an oxyacetylene torch for silver brazing is ____.

Accepted Answer

A)   long tail flame
B)   neutral flame
C)   oxidizing flame
D)   carbonizing flame

Question 18

When installing a refrigeration system, the piping should be connected with as few joints as possible.

Accepted Answer

A) True 
 B)False

Question 19

Molten solder flows between the two base metals being soldered because ____.

Accepted Answer

A)   the atmospheric pressure pushes it in
B)   of capillary attraction
C)   there are no surface pores in the base metal
D)   the tubing surface melts and the pressure differential forces it in

Question 20

One reason for insulation on a suction line is to help maintain the proper ____________________.

Accepted Answer

The answer of One reason for insulation on a suction...

Exam 7: Tubing and Piping

Pipe threads are standardized by the A.N.S. A.N.S. stands for ____.

Correct Answer
verified

For cleaning ACR copper tubing before soldering, a material that can be used is ____.

Correct Answer
verified

The type of steel pipe thread used primarily in this industry is the "tapered" thread. Why?

Correct Answer
verified
They produce a tight...
View Answer

Pipe threads, when used on pipe that will contain liquid or vapor under pressure, ____.

Correct Answer
verified

When soldering, by what force, the molten filler material flows between the two base metals ?

Correct Answer
verified
This is ca...
View Answer

Why should some refrigerant lines be insulated?

Correct Answer
verified
Insulation prevents ...
View Answer

When soldering, why should flux be used?

Correct Answer
verified

The use of flux is always required when soldering or brazing.

Correct Answer
verified

If a technician needed 5/8" ACR for an installation and was located near only a plumbing supply house, what size and type of pipe should he ask for?

Correct Answer
verified

The size indicated for the diameter of ACR copper tubing is the ____.

Correct Answer
verified
B

When making a swage joint, what should the depth of the enlarged portion of the tube be?

Correct Answer
verified
It should be equal to the diameter of the original tube.

The tubing or pipe for natural gas supply to a gas heating unit is ____________________.

Correct Answer
verified

When soldering, flux should be applied to ____.

Correct Answer
verified
A

M is a lightweight copper and is not commonly used in our industry.

Correct Answer
verified

In the thread specification 1/2-14 NPT, the NPT stands for ____________________.

Correct Answer
verified

Match the term with its definition

The proper type of flame from an oxyacetylene torch for silver brazing is ____.

Correct Answer
verified

When installing a refrigeration system, the piping should be connected with as few joints as possible.

Correct Answer
verified

Molten solder flows between the two base metals being soldered because ____.

Correct Answer
verified

One reason for insulation on a suction line is to help maintain the proper ____________________.

Correct Answer
verified

Exam 7: Tubing and Piping

Pipe threads are standardized by the A.N.S. A.N.S. stands for ____.

Correct AnswerverifiedShow Answer

For cleaning ACR copper tubing before soldering, a material that can be used is ____.

Correct AnswerverifiedShow Answer

The type of steel pipe thread used primarily in this industry is the "tapered" thread. Why?

Correct AnswerverifiedThey produce a tight...View AnswerShow Answer

Pipe threads, when used on pipe that will contain liquid or vapor under pressure, ____.

Correct AnswerverifiedShow Answer

When soldering, by what force, the molten filler material flows between the two base metals ?

Correct AnswerverifiedThis is ca...View AnswerShow Answer

Why should some refrigerant lines be insulated?

Correct AnswerverifiedInsulation prevents ...View AnswerShow Answer

When soldering, why should flux be used?

Correct AnswerverifiedShow Answer

The use of flux is always required when soldering or brazing.

Correct AnswerverifiedShow Answer

If a technician needed 5/8" ACR for an installation and was located near only a plumbing supply house, what size and type of pipe should he ask for?

Correct AnswerverifiedShow Answer

The size indicated for the diameter of ACR copper tubing is the ____.

Correct AnswerverifiedB

When making a swage joint, what should the depth of the enlarged portion of the tube be?

Correct AnswerverifiedIt should be equal to the diameter of the original tube.

The tubing or pipe for natural gas supply to a gas heating unit is ____________________.

Correct AnswerverifiedShow Answer

When soldering, flux should be applied to ____.

Correct AnswerverifiedA

M is a lightweight copper and is not commonly used in our industry.

Correct AnswerverifiedShow Answer

In the thread specification 1/2-14 NPT, the NPT stands for ____________________.

Correct AnswerverifiedShow Answer

Match the term with its definition

The proper type of flame from an oxyacetylene torch for silver brazing is ____.

Correct AnswerverifiedShow Answer

When installing a refrigeration system, the piping should be connected with as few joints as possible.

Correct AnswerverifiedShow Answer

Molten solder flows between the two base metals being soldered because ____.

Correct AnswerverifiedShow Answer

One reason for insulation on a suction line is to help maintain the proper ____________________.

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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They produce a tight...
View Answer

Correct Answer
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Correct Answer
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This is ca...
View Answer

Correct Answer
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Insulation prevents ...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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B

Correct Answer
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It should be equal to the diameter of the original tube.

Correct Answer
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Correct Answer
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A

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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