CEA Ergonomic Design & Intervention Strategies 3

Question 1

What is the primary goal of a macroergonomic approach to workplace design?

Accepted Answer

Aligning organizational systems, culture, and work processes with human capabilities

Answer

Macroergonomics addresses the broader sociotechnical system, ensuring organizational structures and processes support human performance.

Question 2

A squeeze force measurement of 32 lbs is recorded during a gripping task. According to ergonomic guidelines, this level would most likely be classified as:

Accepted Answer

Moderate to high force requiring evaluation

Answer

Grip forces above approximately 10 lbs for repetitive tasks are generally considered moderate-to-high risk requiring ergonomic evaluation.

Question 3

Which ergonomic principle does a tilted work surface (angled 10–20°) for assembly tasks primarily address?

Accepted Answer

Neutral neck and wrist posture

Answer

A tilted work surface allows workers to see and access parts with a more neutral neck and wrist posture, reducing flexion.

Question 4

In the context of hand tool design, what does 'pinch grip' avoidance primarily prevent?

Accepted Answer

De Quervain's tenosynovitis and high tendon loading in the thumb

Answer

Pinch grips produce significantly higher tendon forces than power grips and are a primary risk factor for thumb and wrist disorders like De Quervain's.

Question 5

An ergonomist recommends replacing a fixed-height conveyor with a height-adjustable model. This intervention primarily benefits which worker characteristic?

Accepted Answer

The range of worker body size variability (anthropometric diversity)

Answer

Height-adjustable equipment accommodates anthropometric variability, ensuring workers of different statures can maintain neutral postures.

(CEA) Certified Ergonomics Associate Practice Test

(CEA) Certified Ergonomics Associate Practice Test

CEA Ergonomic Design & Intervention Strategies 3