Why Are the Ends of Tack Welds Ground to a Featheredge

question 12

Multiple Choice

Why are the ends of tack welds ground to a featheredge?

• A) It makes it easier to see as you weld across the tack welds.
• B) It prevents the shielding gas from becoming turbulent and losing good gas coverage.
• C) It stops porosity.
• D) It makes it easier to have 100% penetration at the ending and beginning of the root weld.

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Definitions:

Comparative Advantage

The ability of an individual, company, or country to produce a good or service at a lower opportunity cost than competitors. This concept is one of the fundamental principles of economics that helps explain the gains from trade.

Absolute Advantage

The capacity for a person, business, or nation to create a product or offer a service with a per-unit expense that's beneath the cost any other party can achieve for that same product or service.

Opportunity Cost

Discarding possible profits from other actions upon committing to one course.

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