CPE Quality Control & Reliability Engineering

Question 1

What does MTBF stand for in reliability engineering?

Accepted Answer

Mean Time Between Failures

Answer

Maximum Threshold Before Failure

Answer

Measured Time Before Fault

Answer

Minimum Tolerance Between Functions

Question 2

Which statistical distribution is most commonly used to model failure rates in reliability engineering over a product's useful life?

Accepted Answer

Exponential distribution

Answer

Normal distribution

Answer

Weibull distribution

Answer

Poisson distribution

Question 3

What is the primary purpose of a Pareto chart in quality control?

Accepted Answer

To identify the most significant causes of defects using the 80/20 rule

Answer

To track defect trends over time

Answer

To monitor process variation against control limits

Answer

To display the distribution of a data set

Question 4

In Six Sigma, what does the acronym DMAIC stand for?

Accepted Answer

Define, Measure, Analyze, Improve, Control

Answer

Design, Monitor, Assess, Implement, Check

Answer

Detect, Measure, Adjust, Inspect, Confirm

Answer

Define, Manage, Analyze, Integrate, Calibrate

Question 5

In statistical process control (SPC), what condition indicates a process is 'out of control'?

Accepted Answer

A data point falls outside the upper or lower control limits

Answer

All data points fall within the control limits

Answer

The process average equals the target value

Answer

The standard deviation is less than 1

Question 6

Overall Equipment Effectiveness (OEE) is calculated as the product of which three factors?

Accepted Answer

Availability, Performance, and Quality

Answer

Reliability, Maintainability, and Availability

Answer

Uptime, Throughput, and Yield

Answer

Capacity, Efficiency, and Utilization

Question 7

What is the availability (A) of a system with an MTBF of 200 hours and an MTTR of 8 hours?

Accepted Answer

0.96

Answer

0.92

Answer

0.98

Answer

0.80