Question 1

What are two purposes for using insulation on the suction line?

Accepted Answer

It keeps the line fr...

Question 2

The copper tubing used in the field piping of refrigeration systems is type ____________________.

Accepted Answer

The answer of The copper tubing used in the field...

Question 3

Four tools that are needed to properly prepare and thread steel pipe are the pipe cutter, reamer, threader, and ____________________.

Accepted Answer

The answer of Four tools that are needed to properly...

Question 4

The abbreviation for the plastic pipe used in systems for water and gas supply lines and irrigation systems is ____________________.

Accepted Answer

The answer of The abbreviation for the plastic pipe used...

Question 5

The abbreviation for the plastic pipe used in hot and cold water supply systems is ____________________.

Accepted Answer

The answer of The abbreviation for the plastic pipe used...

Question 6

When soldering or brazing, the solder is ____.

Accepted Answer

A)   heated directly by the flame of the heat source
B)   heated by the surrounding air
C)   used to oxidize the metal
D)   melted by heat from the tubing and fitting

Question 7

DWV copper stands for drain, waste and vent and is also a lightweight copper not typically used in the HVACR industry as far as refrigerant-carrying applications are concerned.

Accepted Answer

A) True 
 B)False

Question 8

ABS and PVC pipe can be used to carry the new blended refrigerants in low temperature applications.

Accepted Answer

A) True 
 B)False

Question 9

The abbreviation for the plastic pipe used in high pressure systems at low temperature is ____________________.

Accepted Answer

The answer of The abbreviation for the plastic pipe used...

Question 10

When joining steel pipe, a ____ should be applied to the threads before connecting.

Accepted Answer

A)   pipe dope
B)   flux
C)   solder
D)   gasket

Question 11

K-type copper is heavy duty with a thick tubing wall.

Accepted Answer

A) True 
 B)False

Question 12

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

Accepted Answer

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

Question 13

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

Accepted Answer

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

Question 14

When soldering, the technician should heat the solder with the torch to allow it to melt.

Accepted Answer

A) True 
 B)False

Question 15

Brazing is done at ____ soldering.

Accepted Answer

A)   the same temperature as
B)   lower temperatures than
C)   higher temperatures than
D)   temperatures that can be higher or lower than

Question 16

Filler materials used in the high temperature connection of copper joints are composed of ____.

Accepted Answer

A)   50/50 tin-lead
B)   95/5 tin-antimony
C)   15%-60% silver
D)   bronze

Question 17

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

Accepted Answer

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

Question 18

The end of a piece of a steel pipe is reamed after it is cut with a pipe cutter to make it easier to start the thread die.

Accepted Answer

A) True 
 B)False

Question 19

An air-acetylene unit usually consists of a B tank of acetylene gas, a regulator, a hose, and a torch .

Accepted Answer

A) True 
 B)False

Question 20

95/5 tin-antimony solder can be used in any part of a refrigeration system.

Accepted Answer

A) True 
 B)False

Exam 7: Tubing and Piping

Brazing is done at ____ soldering.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When soldering or brazing, the solder is ____.

Correct AnswerverifiedShow Answer

When joining steel pipe, a ____ should be applied to the threads before connecting.

Correct AnswerverifiedShow Answer

What are two purposes for using insulation on the suction line?

Correct AnswerverifiedIt keeps the line fr...View AnswerShow Answer

The copper tubing used in the field piping of refrigeration systems is type ____________________.

Correct AnswerverifiedShow Answer

An air-acetylene unit usually consists of a B tank of acetylene gas, a regulator, a hose, and a torch .

Correct AnswerverifiedShow Answer

DWV copper stands for drain, waste and vent and is also a lightweight copper not typically used in the HVACR industry as far as refrigerant-carrying applications are concerned.

Correct AnswerverifiedShow Answer

K-type copper is heavy duty with a thick tubing wall.

Correct AnswerverifiedShow Answer

Four tools that are needed to properly prepare and thread steel pipe are the pipe cutter, reamer, threader, and ____________________.

Correct AnswerverifiedShow Answer

ABS and PVC pipe can be used to carry the new blended refrigerants in low temperature applications.

Correct AnswerverifiedShow Answer

95/5 tin-antimony solder can be used in any part of a refrigeration system.

Correct AnswerverifiedShow Answer

The abbreviation for the plastic pipe used in systems for water and gas supply lines and irrigation systems is ____________________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

When soldering, the technician should heat the solder with the torch to allow it to melt.

Correct AnswerverifiedShow Answer

The abbreviation for the plastic pipe used in high pressure systems at low temperature is ____________________.

Correct AnswerverifiedShow Answer

The abbreviation for the plastic pipe used in hot and cold water supply systems is ____________________.

Correct AnswerverifiedShow Answer

The end of a piece of a steel pipe is reamed after it is cut with a pipe cutter to make it easier to start the thread die.

Correct AnswerverifiedShow Answer

Filler materials used in the high temperature connection of copper joints are composed of ____.

Correct AnswerverifiedShow Answer

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It keeps the line fr...
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