WACE Engineering Studies Practice Questions - WACE ATAR Engineering Studies (Units 3 & 4) Exam

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Engineers measure tensile strain (epsilon) during a destructive tensile test. What is the standard definition and unit of tensile strain?

Change in length divided by original length; dimensionless quantity Change in length multiplied by original length; expressed in meters Original length divided by change in length; expressed in percentage per meter Force per unit change in length; expressed in Newtons per millimeter

Correct Answer:

Change in length divided by original length; dimensionless quantity

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