CRE Technical Standards and Specifications 3

Question 1

Which reliability standard specifically addresses the application of FMECA methodology for military systems and equipment?

Accepted Answer

MIL-STD-1629A

Answer

MIL-STD-1629A defines procedures for performing Failure Mode, Effects, and Criticality Analysis (FMECA) on military systems.

Question 2

According to IEEE 493 (Gold Book), what is the primary objective of reliability analysis in industrial power systems?

Accepted Answer

Quantifying the reliability and availability of power supply to loads

Answer

IEEE 493 (Gold Book) provides reliability analysis methods to quantify the expected frequency and duration of power interruptions to industrial and commercial power systems.

Question 3

What does the 'Design Eye' concept in DO-160 environmental testing specify?

Accepted Answer

Environmental conditions that airborne equipment must withstand

Answer

DO-160 (RTCA/DO-160) establishes standardized environmental test conditions and procedures for airborne equipment to ensure it withstands its operational environment.

Question 4

In the HALT (Highly Accelerated Life Testing) methodology, what is the primary goal of applying stepped stresses beyond rated limits?

Accepted Answer

Identify the fundamental limits of a product's design quickly

Answer

HALT applies accelerated stresses beyond operational limits to rapidly expose design weaknesses and margins, enabling design improvements before production.

Question 5

Under the IEC 60300 series (Dependability management), what does the term 'availability' formally represent?

Accepted Answer

The ability of an item to be in a state to perform a required function under given conditions at a given instant

Answer

Per IEC 60300, availability is the ability of an item to perform its required function under stated conditions at a given instant or over a stated period of time.

(CRE) Certified Reliability Engineer Practice Test

(CRE) Certified Reliability Engineer Practice Test

CRE Technical Standards and Specifications 3