Free ASQ CQE Exam Actual Questions

The questions for CQE were last updated On Apr 20, 2025

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Question No. 1

The following components (1,2,3) each have reliabilities of 0.95.

What is the system reliability?

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Correct Answer: B

Given that components 1, 2, and 3 each have reliabilities of 0.95, and assuming the system configuration as depicted in the image (series-parallel configuration):

Reliability of the parallel components (2 and 3): Rparallel=1[(1R2)(1R3)]R_{\text{parallel}} = 1 - [(1 - R_2) \times (1 - R_3)]Rparallel=1[(1R2)(1R3)] Rparallel=1[(10.95)(10.95)]R_{\text{parallel}} = 1 - [(1 - 0.95) \times (1 - 0.95)]Rparallel=1[(10.95)(10.95)] Rparallel=1[0.050.05]R_{\text{parallel}} = 1 - [0.05 \times 0.05]Rparallel=1[0.050.05] Rparallel=10.0025R_{\text{parallel}} = 1 - 0.0025Rparallel=10.0025 Rparallel=0.9975R_{\text{parallel}} = 0.9975Rparallel=0.9975

Reliability of the entire system (series of component 1 and the parallel system): Rsystem=R1RparallelR_{\text{system}} = R_1 \times R_{\text{parallel}}Rsystem=R1Rparallel Rsystem=0.950.9975R_{\text{system}} = 0.95 \times 0.9975Rsystem=0.950.9975 Rsystem=0.947625R_{\text{system}} = 0.947625Rsystem=0.947625

Rounded to three decimal places, the system reliability is 0.948.


Reliability engineering principles for series and parallel systems calculations.

Question No. 2

A customer rates its suppliers for which of the following reasons?

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Correct Answer: B

Customers rate their suppliers to evaluate and compare the performance and quality of different suppliers. This helps in making informed decisions about which supplier to choose based on various factors such as quality, cost, and reliability. Among the given options, the most appropriate reason is: Reason: Comparing multiple sources of the same item allows the customer to choose the best supplier based on performance metrics.


Question No. 3

Maintainability is

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Correct Answer: A

Question No. 4

A leak test is performed on every water tank. The production superintendent wants to know the location of each leak on defective tanks. Which of the following tools is most appropriate for collecting this data?

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Correct Answer: D

To collect data on the location of each leak on defective tanks, the most appropriate tool is a check sheet. A check sheet allows for the systematic recording and compiling of data, making it easy to identify and locate defects. Reason: A check sheet is used to collect data in a structured manner and is particularly useful for tracking the frequency and location of defects.


Question No. 5

The holes in this drawing have what kind of tolerance?

The holes in this drawing have what kind of tolerance?

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Correct Answer: B

Bilateral tolerance means that the allowable deviation is specified in both directions from the nominal dimension.

In the provided drawing, the hole dimension is given with an equal tolerance range on both sides, indicating bilateral tolerance.

Reference: 'Engineering Drawing and Design' by David A. Madsen and 'Geometric Dimensioning and Tolerancing' by Alex Krulikowski discuss bilateral tolerances and their representation in technical drawings.