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C36 PLUMBING CSLB (ACTUAL / ) EXAM | QUESTIONS
AND VERIFIED ANSWERS GRADED A+
The passageway in a gas valve (the valve opening) must equal the area of the pipe served.
True: that is why a gas-cock is used instead of a ball valve
How much earth is needed over metal gas pipe?12 inches
How much earth coverage is needed over plastic gas pipe?18 inches
A plumber may do all of the following to gas pipe except:
bend or strain- Do not bend gas pipe UPC 1205
Every __ feet, supports for a 1 ½ inch gas line should be spaced.10 feet 1 / 4
A halogen test is used to:
locate a gas leak
The usual practice is to apply heat when soft-soldering a horizontal joint.to the bottom and solder to the top
Stop soldering a joint when the brazing alloy:
forms a continuous fillet around the joint
In a closed system, when brazing a jacketed or hollow fitting:
drill a hole to let out gas
When brazing, you heat the filler rod _____ the material.less than
When is a brazed joint used on copper? 2 / 4
additional strength
When is a brazed joint used on copper?if water is 350°F or higher
The preferred practice is to apply brazing alloy when brazing a
horizontal joint in the followi?g sequence:
top, sides, bottom
Which flame represents the neutral flame?#3
Which flame has too much oxygen?#1
Which flame has too much acetylene?#2
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What condition would increase the carbon content in the metal being welded when you cut steel with oxygen and acetylene?too much acetylene
The oxygen hose is colored:
green
The acetylene hose is colored red
In a torch, the pressure of acetylene is:
15 psi
You should use what type of allow when brazing stainless steel?silver
How do you increase the arc voltage in a constant-current machine, when arc welding?increase arc length
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