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Question

Difficulty: EasyIdentifying Implied Meanings

Passage:
Before welding cast iron engine components, mechanics preheat the metal and place the finished piece into insulated sand to cool slowly over several hours. Rapid temperature drops cause cast iron to contract unevenly, forming micro-cracks along the weld seam.

Statement: Allowing a welded cast iron component to cool rapidly compromises the structural strength of the repair.

Answer: Answer

Answer

True
The statement is true because the passage indicates that rapid temperature drops produce micro-cracks along the seam, which logically means the strength of the weld is compromised.

Step-by-Step Solution

1
Identify the text details regarding what occurs during rapid temperature changes.
The passage notes that rapid temperature drops cause uneven contraction and micro-cracks along the weld seam.
Understanding the immediate physical effect of fast cooling provides the basis for evaluating the statement.
2
Determine the implied meaning of forming micro-cracks in a weld seam.
Cracking along a weld joint weakens the overall durability and strength of the component.
Connecting micro-cracking to reduced structural integrity deduces the unstated consequence.
3
Evaluate whether the statement accurately reflects this implied consequence.
The statement correctly reflects that rapid cooling compromises the repair.
Comparing the deduction to the statement confirms that the evaluation is True.

Key Concept

Deducing unstated physical consequences from passage evidence
Estimated Time:45s
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Topics

Identifying Implied Meanings

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