SMAW: Weld Variables & Quality Set 1 (WDTM14)

The learner will demonstrate an understanding of Shielded Metal Arc Welding variables and quality.

Author - David Crawford


Question 1:

Metal thickness, position, and the _____________ determines how large an electrode can be used.

Answer 1:

flux coating

Answer 2:

polarity

Answer 3:

type of joint


Correct Answer:

type of joint


Question 2:

Most covered electrodes operate best on ______________.

Answer 1:

AC

Answer 2:

DCEP

Answer 3:

DCEN


Correct Answer:

DCEP


Question 3:

Amperage ____________ the recommended range shouldn't be used becasue it could cause excessive spatter, arc blow, undercut, and weld metal cracking.

Answer 1:

beyond

Answer 2:

below

Answer 3:

within


Correct Answer:

beyond


Question 4:

As a general rule, the ___________ arc length shouldn't exceed the diameter of the electrode's core wire.

Answer 1:

maximum

Answer 2:

minimum


Correct Answer:

maximum


Question 5:

For fillet welds, the arc is crowded into the joint for a __________ deposition rate and the best penetration.

Answer 1:

low

Answer 2:

medium

Answer 3:

high


Correct Answer:

high


Question 6:

When arc blow is encountered, the arc length should be ___________ as much as possible.

Answer 1:

eliminated

Answer 2:

lengthened

Answer 3:

maintained

Answer 4:

shortened


Correct Answer:

shortened


Question 7:

__________ penetration is caused by the arc dwelling on the molten weld pool instead of leading it and concentrating on the base metal.

Answer 1:

Deep

Answer 2:

Shallow


Correct Answer:

Shallow


Question 8:

Higher travel speed __________ the size of the heat-affected zone and increases the cooling rate of the weld.

Answer 1:

increases

Answer 2:

reduces

Answer 3:

maintains


Correct Answer:

reduces


Question 9:

Two methods to strike the arc are by ____________ and by _____________ the electrode.

Answer 1:

Pulling trigger

Answer 2:

scratching and tapping

Answer 3:

scrapping and tapping


Correct Answer:

scratching and tapping


Question 10:

You should strike low-hydrogen electrodes ahead of the place where welding is to begin, and then quickly move back to begin running the bead to avoid ______________.

Answer 1:

fusion

Answer 2:

penetration

Answer 3:

undercut

Answer 4:

porosity


Correct Answer:

porosity


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