Question

When the wire electrode speed is increased, the result is usually:

A. Increased penetration
B. Reduced penetration
C. Unchanged penetration
D. Variable penetration

Answer 1

In welding, increasing the wire electrode speed typically decreases penetration due to a higher rate of filler addition compared to the available heat input.

Step-by-step explanation:

The question pertains to the process of welding, specifically in relation to the speed of the wire electrode. Increasing the wire electrode speed generally leads to a reduction in penetration because more filler material is added to the weld pool than can be melted by the heat input. The heat input per unit length decreases as the wire speed increases, if all other variables remain constant, which results in a shallower penetration of the weld into the base material.