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Ag. Mech facts test with Questions and 100% Correct Answers
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Ag. Mech facts test with Questions and 100% Correct Answers
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Ag. Mech facts test with Questions and100% Correct Answers
How far do you open the oxygen cylinder valve? - Answer All the way, hard
how far do you open the acetylene cylinder valve? - Answer 3/4 to 1 1/2 turns
list two of the three types of flames and descrive each one - Answer
Neutral-perfect primary cone; best for most work.
Carburizing-long feather for primary cone. Oxidizing-loud sound and a very short
primary core
what is the proper angle that the torch must be held at when welding? - Answer
45 degrees
which is more dangerous, a backfire or flashback? - Answer flashback, may
cause an explosion if not stopped
what is the difference between straight and reverse polarity? - Answer straight-
electrons flow from electrode to workpiece
reverse-electrons flow from workpiece to electrode.
, explain when reverse polarity is better suited than straight polarity. - Answer
better for position welding
name at least three items of protective clothing needed for welding? - Answer
welding helmet, leather gloves, safety glasses, leather apron
what are the four basic positions used in welding? - Answer horizontal, flat,
vertical, overhead
what are the two methods of starting an arc? - Answer tapping or scratching
what is undercutting - Answer too high of current leaves a groove on edge of
weld deposit
describe an arc that is too long - Answer Wide, spattered, and irregular weld;
steady hiss or buzz
what should the lead angle be on a flat-butt weld - Answer 15 degrees
on an E6013 electrode, what are the characteristics that each part of the
name tells us? - Answer E-electrode
60-Strength.
1- positions
3-special characteristics
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