RAM System Reliability Analysis 2

Question 1

In a reliability block diagram (RBD), what does a parallel configuration represent?

Accepted Answer

At least one component must work for system success

Answer

A parallel configuration in an RBD means the system succeeds if at least one of its parallel paths is functioning.

Question 2

Which reliability metric directly measures the probability that a component will NOT fail during a specified mission time?

Accepted Answer

Reliability R(t)

Answer

Reliability R(t) is defined as the probability that a component or system performs its required function without failure over a specified time interval.

Question 3

A system has three components in series with individual reliabilities of 0.95, 0.90, and 0.85. What is the system reliability?

Accepted Answer

0.726

Answer

For series systems, system reliability equals the product of individual reliabilities: 0.95 × 0.90 × 0.85 = 0.726.

Question 4

What is the primary purpose of a Failure Mode and Effects Analysis (FMEA)?

Accepted Answer

To identify potential failure modes and assess their impact on system performance

Answer

FMEA systematically identifies potential failure modes, their causes, and the effects they have on system operation to prioritize corrective actions.

Question 5

The Weibull distribution's shape parameter (β) equals exactly 1. What does this indicate about the failure behavior?

Accepted Answer

Failures are constant (random/chance failures)

Answer

When β = 1, the Weibull distribution reduces to the exponential distribution, indicating a constant failure rate characteristic of the useful life period.

(RAM) Reliability, Availability, and Maintainability Certified Professional Practice Test

(RAM) Reliability, Availability, and Maintainability Certified Professional Practice Test

RAM System Reliability Analysis 2