____ are those in which a change may be made without requiring requalification of the procedure.
A) Essential variables
B) Nonessential variables
C) Code parameters
D) WPS parameters

Question

Quizplus · Accepted Answer

Nonessential variables are those that may be changed without requiring requalification of the procedure. Essential variables, on the other hand, are those that cannot be changed without requalification. Code parameters and WPS parameters are not recognized terms in welding procedure qualification.

____ Are Those in Which a Change May Be Made