CPE Ergonomics Assessment & Analysis 3

Question 1

An ergonomist is evaluating a call center and finds workers report eye strain and headaches. Which assessment approach is MOST appropriate as a first step?

Accepted Answer

Visual comfort survey combined with workstation lighting measurement

Answer

Combining subjective symptom surveys with objective illuminance and luminance measurements addresses likely visual ergonomic stressors in office environments.

Question 2

Which anthropometric design principle ensures that a workspace dimension (e.g., reach distance) accommodates the widest range of users?

Accepted Answer

Designing for the range (5th to 95th percentile)

Answer

Designing for the 5th-to-95th-percentile range accommodates 90% of the target population while remaining practical to implement.

Question 3

In a process plant, an ergonomist uses link analysis to redesign a control panel. What does a 'link' represent in this context?

Accepted Answer

A functional relationship or movement between two elements such as controls and displays

Answer

In link analysis, links represent operator movements, eye glances, or functional relationships between workspace elements to optimize layout.

Question 4

A push/pull force assessment finds a worker must exert 85 lbs initial force to move a loaded cart. According to Liberty Mutual Psychophysical Tables, this force level is acceptable for what percentage of the male population?

Accepted Answer

Less than 10% (unacceptable for most workers)

Answer

85 lbs initial push force exceeds acceptable limits for the vast majority of male workers according to Liberty Mutual Psychophysical Tables.

Question 5

Which measure is used in RULA to differentiate between muscle use that is static versus repeated?

Accepted Answer

Muscle use score (+1 for static posture held >1 min or repeated >4x/min)

Answer

RULA adds a +1 muscle use score when a posture is held statically for more than one minute or repeated more than four times per minute.

(CPE) Certified Professional Ergonomist Practice Test

(CPE) Certified Professional Ergonomist Practice Test

CPE Ergonomics Assessment & Analysis 3