AEP Core Knowledge Areas 3

Question 1

When calculating the NIOSH Recommended Weight Limit (RWL), the Load Constant (LC) of 51 lbs represents:

Accepted Answer

The weight that nearly all healthy adults can lift under ideal conditions without spinal injury risk

Answer

The 51-lb LC is the maximum recommended load under ideal lifting conditions (close, waist-height, symmetric, infrequent lift), derived to protect most healthy workers.

Question 2

An ergonomist uses an accelerometer to measure hand-arm vibration. The result is expressed as an 8-hour energy-equivalent frequency-weighted acceleration (A(8)). What standard provides the US exposure action value and limit value guidance?

Accepted Answer

ANSI S2.70 and ISO 5349-1

Answer

ISO 5349-1 defines the method for measuring and evaluating hand-arm vibration exposure, including the frequency-weighted A(8) metric widely referenced in US guidelines.

Question 3

A call center ergonomist recommends a headset instead of a handset for customer service representatives. Which ergonomic risk factor does this primarily address?

Accepted Answer

Static shoulder elevation and lateral neck flexion from cradling the handset

Answer

Cradling a handset between the ear and shoulder forces prolonged lateral neck flexion and shoulder elevation, which headsets eliminate by freeing both hands.

Question 4

In office ergonomics, what is the recommended distance between the monitor screen and the user's eyes for standard office work?

Accepted Answer

18–30 inches (46–76 cm)

Answer

A viewing distance of 18–30 inches (approximately arm's length) is recommended to reduce eye strain and support a neutral head posture.

Question 5

Which of the following BEST describes the concept of 'coupling' in the context of manual materials handling?

Accepted Answer

The quality of the grip between the worker's hands and the object being handled

Answer

In the NIOSH equation, coupling refers to how well a worker can grip the load; good coupling (handles, cut-outs) reduces required grip force and spinal loading.

(AEP) Associate Ergonomics Professional Practice Test

(AEP) Associate Ergonomics Professional Practice Test

AEP Core Knowledge Areas 3