Certified Reliability Engineer Practice Test

Question: 1 / 400

What does the term "design margin" refer to?

The gap between expected operating limits and actual performance limits

The term "design margin" refers to the gap between expected operating limits and actual performance limits. This concept is crucial in engineering and reliability because it indicates the buffer or safety factor built into a design to ensure that the product or system performs reliably under expected conditions and potential variances. A sufficient design margin ensures that even when real-world factors such as wear and tear, changes in operating conditions, or unforeseen stresses are applied, the product will still perform adequately and safely.

Establishing an appropriate design margin is key to balancing performance with reliability and safety. A design margin that is too small may result in failures or degraded performance, while a margin that is too large can lead to unnecessary costs or complexity without added benefits. Thus, the correct answer reflects a fundamental aspect of creating robust and reliable designs.

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The percentage of defects in a batch of products

The cost difference between production and selling price

The time difference between project phases

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