Certified Reliability Engineer (CRE) (CRE) Free Practice Test

Question 1

Which of the following are important elements of the concept of risk?
Ⅰ. Damage
Ⅱ. Frequency
Ⅲ. Schedule
Response:

A. I and II only

B. II and III only

C. I and III only

D. I, II, and III

Correct Answer: A

Question 2

The ratio of the variances of two independent samples from normal distributions with a common true variance has what type of distribution?
Response:

A. t

B. F test

C. chi-square.

D. Beta

Correct Answer: B

Question 3

Which of the following statements is TRUE about human factor points?
Response:

A. They are not necessary until the product has been designed and field tested.

B. They are most costly to incorporate during the concept phase.

C. They generally cause schedule slippage whenever they are incorporated.

D. They should be incorporated during the design phase.

Correct Answer: D

Question 4

Which of the following CANNOT be classified as a computer output device?
Response:

A. Magnetic tape unit.

B. The keyboard.

C. Disc drive unit.

D. Printer.

Correct Answer: B

Question 5

Production error by human operators may be caused by:
I. Inadequate work space.
II. Inadequate job planning information.
III. Poor environmental conditions.
Response:

A. All of the above

B. II

C. I and II

D. I

Correct Answer: A

Question 6

A failure that occurs without being caused by the failure of any other item is known as:
Response:

A. A pattern failure.

B. An independent failure.

C. A dependent failure.

D. An intermittent failure.

Correct Answer: B

Question 7

Which of the following statement is TRUE about environmental stress screening (ESS)?
Response:

A. It stresses equipment beyond design limits

B. It is a form of accelerated testing.

C. It involves random sampling

D. It is used to validate a design.

Correct Answer: C

Question 8

A certain equipment has a MTBF of m = 300 hours. Assuming an exponential distribution of time to failure, what is the maximum time of allowable operation if a reliability of 0.999 is required?
Response:

A. 300 hours

B. 0.3 hours.

C. 0.003 hours.

D. 30 hours.

Correct Answer: B

Question 9

Design plans are BEST developed for product reliability with significant input from which of the following?
Response:

A. Quality management.

B. General management.

C. Reliability management.

D. The project team.

Correct Answer: D

Question 10

Product reliability concerns the relationship of product function to:
Response:

A. Time.

B. Cost.

C. Customer demands.

D. Design.

Correct Answer: A

Question 11

A primary purpose of burn-in testing of parts is to
Response:

A. Ensure that parts operate at elevated temperatures.

B. Measure the temperature/stress distribution of parts.

C. Ensure that parts are safe.

D. Eliminate substandard parts.

Correct Answer: D

Question 12

In 4 flips of a coin the probability of two heads and two tails (in any order) is:
Response:

A. 7/16

B. 3/8

C. 9/16

D. 1/2

Correct Answer: B

Question 13

Which of the following is TRUE about the distribution of the mean for large samples?
Response:

A. It is exponentially distribution.

B. It is lognormally distributed.

C. It is normally distributed.

D. It is the same as the population distributions.

Correct Answer: C

Question 14

The comparative financial effects of reliability over the designed operating time T of two systems built to perform the same function can be obtained by comparing the
I. Failure rates.
II. Operating life of each system.
III. Cost of each system (including repair, replacement, and loss).
Response:

A. I, II and III

B. II and III only

C. II only

D. I and III only

Correct Answer: A

Question 15

In order to sustain a high system reliability in the field, it is BEST to:
Response:

Welcome to TestSimulate

ASQ Certified Reliability Engineer (CRE) (CRE) Free Practice Test