ASQ CRE

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Carefully written content

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ASQ Certified Reliability Engineer (CRE) Sample Questions:

1. A randomly failing component is tested to r failures, and n observations are made. Degrees of freedom for calculating confidence limits on the mean should be:
Response:

A) n - 1
B) n
C) 2r + 2
D) 2r

2. Which answer mathematically expresses the reliability of an active parallel system in which all component reliabilities are unequal?

Response:

A) Rs = Ra + Rb + Rc - RaRbRc
B) Rs = RaRbRc - (RaRb + RbRc + RaRc) + (Ra + Rb + Rc)
C) Rs = [RaRbRc + RaRb + RbRc + RaRc ] / [Ra + Rb + Rc]
D) Rs = [RaRbRc] / [Ra + Rb + Rc]

3. Consider the four normal stress and strength distributions described below. Which component would have the highest reliability?
Response:

A) Both distributions have the same variance but the stress average is slightly higher than the strength average.
B) The average and standard deviation of the stress and strength distributions are the same.
C) Both distributions have the same standard deviation but the strength average is higher than the stress average.
D) The average and standard deviation of the stress distribution are both higher than for the strength curve.

4. Human factors in product safety planning are assessed for which of the following reasons?
I. To allocate the proper balance between man and machine.
II. To address the limitations of human beings.
III. To determine the user hardware interaction.
Response:

A) III only
B) I and III only
C) I, II and III
D) I and II only

5. A company is in a multi-products, competitive market. Which of the following is the MOST appropriate strategy to help capture the maximum market share?
Response:

A) Improving the capacity of manufacturing process.
B) Increasing the reliability of current product
C) Reducing cycle time while introducing new, reliable products.
D) Performing aggressive field-testing.

Solutions: