​What Is the Purpose of the Filler Passes

question 39

Multiple Choice

​What is the purpose of the filler passes?

• A) ​They add the bulk of the weld metal to the groove.
• B) ​They are used to push any lack of root fusion or lack of 100% penetration.
• C) ​They are used to remove any small trapped pieces of slag or lack of side wall fusion.
• D) ​They are used to cover up any problems in the hot pass.

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Definitions:

Probabilities

Refers to the likelihood of different outcomes in an uncertain event, usually expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.

Degrees Of Freedom

The number of independent pieces of information in a dataset that are available for estimating a statistic, often related to the number of observations and the number of parameters being estimated.

Chi-square Statistic

A measure used in statistics to test hypotheses about the distribution of observations in different categories, based on the sum of squared discrepancies between observed and expected counts.

Null Hypothesis

The null hypothesis is a statement suggesting that there is no significant effect or difference for a specific experiment or study.