What does the term kindling temperature mean? a. It is the temperature at which rapid oxidation…

What does the term kindling temperature mean? a. It is the temperature at which rapid oxidation occurs. b. It is the temperature at which a metal begins to vaporize. c. It is the temperature when the alloys of metal begin to combine. d. It is the temperature when metal begins to glow bright white. What is an advantage of having two oxygen regulators on a machine-cutting torch? a. It allows the cutting pressure to be adjusted without affecting the torch flame. b. It makes it easier to light the torch. c. It allows air to be used instead of oxygen for the flame. d. It makes it possible to

What does the term kindling temperature mean? a. It is the temperature at which rapid oxidation occurs. b. It is the temperature at which a metal begins to vaporize. c. It is the temperature when the alloys of metal begin to combine. d. It is the temperature when metal begins to glow bright white. What is an advantage of having two oxygen regulators on a machine-cutting torch? a. It allows the cutting pressure to be adjusted without affecting the torch flame. b. It makes it easier to light the torch. c. It allows air to be used instead of oxygen for the flame. d. It makes it possible to change cylinders during a cut without stopping the cut. How is a welding tip seal checked for a leak? a. Place your finger over the end of the tip and spray the fitting with a leak detector. b. Once the tip is tight, use a wrench to make 1/additional turn. c. Put the cutting head in the cooling tank and look for bubbles. d. Clean the fitting with a dry clean rag, and tighten the fitting with a 12 in. adjustable wrench. Most cutting tips are made of ____. a. copper alloy b. stainless steel c. cast iron d. nickel alloy When a left-handed welder is making a cut with a hand torch, the torch should be braced ____ a. with the left hand b. with both hands c. with a clamp d. with the right hand Acetylene is used in tips having ____ preheat holes. a. one to three b. one to six c. three to five d. three to eight Why is the oxygen turned on for a moment after a tip is cleaned? a. To make sure the tip has been cleaned enough. b. To blow out any material loosened during the cleaning. c. So that you can check for leaks. d. All of the above ____ contains little or no unoxidized iron. a. Soft slag b. Hard slag c. Magnesium d. Zinc