Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 7, Problem 15RQ
List the procedures used when setting up, igniting, and using an air-acetylene unit.
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List the procedures used when setting up, igniting, andusing an air-acetylene unit.
In oxy-acetylene welding, the oxygen cylinder is usually painted in which color?
Black
В.
Red
White
D. Blue
Which of the following gases are most frequently used as shielding to provide an inert atmosphere in the
vicinity of the weld?
a. argon, helium, and carbon dioxide
b. sulphur dioxide, argon, and oxygen
C. argon and helium
O d. argon and carbon dioxide
e. argon and carbon dioxide
Chapter 7 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 7 - The standard weight of copper tubing used most...Ch. 7 - The size of 1/2 in. would refer to the...Ch. 7 - The size of 1/2 in. would refer to the _______...Ch. 7 - In what size rolls is soft copper tubing normally...Ch. 7 - Why are some ACR tubing lines insulated?Ch. 7 - Describe procedures for bending soft copper...Ch. 7 - Describe the procedure for cutting tubing with a...Ch. 7 - What type of solder is suitable for moderate...Ch. 7 - Describe the steps for making a good soldered...Ch. 7 - Describe the procedures for making a flare for...
Ch. 7 - The portion of a compression fitting that actually...Ch. 7 - What is the most common cause of leaking...Ch. 7 - A common filler material used for brazing is...Ch. 7 - When soldering, a flux is used to A. minimize...Ch. 7 - List the procedures used when setting up,...Ch. 7 - Describe the procedure for preparing and threading...Ch. 7 - Describe each part of the thread dimension 1/4-18...
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- What is missing below in order to satisfy the conditions necessary in order to cut when using an oxygen-fuel gas mixture? A fuel cylinder, oxygen cylinder, mixer chamber, welding torch and? a. Flame arrestor b. Nozzle tip c. Control valves d. Flame cutter on the other hand, A visual check during electric welding includes? a. Strength of joint b. Cable inspections c. Pressure setting d. Slag inclusion And, Since visual inspection is an examination of the eye, which of these statements describes its limitation? a. It is also known as ductility test. b. It can only detect or locate defects on weld surface. c. It is usually inexpensive and no power needed. d. Information on macro structural can be assessed.arrow_forwardWhat can happen if acetylene is used on a tip designed to be used with propane or other such gas?arrow_forwardIn gas welding process, which among the following type of flame where Acetylene is in excess proportion with Oxygen? O a. Carburizing flame O b. Oxidizing flame C. Neutral flame O d. Both oxidizing flame and carburizing flame E hparrow_forward
- List the common methods used to start the SA arc.arrow_forwardWhen stopping an SMA welding bead on a pipe, what should be done to make restarting it more uniform?arrow_forwardOnce the torch is lit, why must the acetylene flow be increased until the flame stops smoking before the oxygen is turned on for adjustment?arrow_forward
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