NOTE TO INSTRUCTOR: in Constructing Variations to the Questions in This

question 86

Multiple Choice

NOTE TO INSTRUCTOR: In constructing variations to the questions in this chapter, care should be taken in the selection of multiple choice responses. The responses used in the questions herein were carefully selected to avoid controversy. For instance in question 1 SMAW or FCAW were not used as responses because these processes are also widely used in plate girder manufacturing although the SAW process is the best selection for typifying this type of application. The text mentions only SAW for plate girder manufacturing and the other three choices offered in the quiz question 1 (RSW, RSEW, and TW) are clearly incorrect responses to this question. This caution is offered to avoid challenges by students who may be experienced welders and may question the correct answer to a multiple choice question if the responses are not carefully selected to avoid such controversy. The same caution is urged for other sample questions offered for this chapter.
-Which of the following types of welding employs an inert gas?

• A)GTAW
• B)GMAW
• C)TIG
• D)all of the above
• E)none of the above

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Definitions:

Range

The difference between the highest and lowest values in a data set, showing the spread or dispersion of the data points.

Range

The gap between the maximum and minimum values within a set of data.

Standard Deviation

A metric for evaluating the degree of spread or deviation in a collection of data points.

Bimodal

A frequency distribution having two different values that are most commonly observed or two peaks.