CEA Office Ergonomics & Computer Use 3

Question 1

According to ergonomic guidelines, how far should a computer monitor typically be positioned from the user's eyes?

Accepted Answer

20–40 inches

Answer

A viewing distance of 20–40 inches (approximately arm's length) is recommended to reduce eye strain and accommodate comfortable focus.

Question 2

Which posture-related risk is most commonly associated with using a mouse positioned too far from the keyboard?

Accepted Answer

Shoulder abduction and elevated arm

Answer

Reaching outward for a distant mouse causes shoulder abduction, raising the arm and loading shoulder muscles and the rotator cuff.

Question 3

What is the primary purpose of document holders placed adjacent to computer monitors?

Accepted Answer

Reduce neck rotation and accommodation changes between source and screen

Answer

Document holders position reference materials at the same height and distance as the screen, minimizing repetitive neck movement and focal adjustments.

Question 4

A supervisor notices workers frequently craning their necks upward to view their monitors. The most likely root cause is:

Accepted Answer

Monitor tops are positioned above the user's eye level

Answer

When the top of the monitor is above eye level, users must extend the neck to view the screen, causing cervical strain.

Question 5

Which type of chair adjustment has the greatest impact on reducing low-back compressive forces during computer work?

Accepted Answer

Backrest recline angle

Answer

Reclining the backrest to approximately 100–110° reduces lumbar disc pressure compared to an upright 90° posture.

(CEA) Certified Ergonomics Associate Practice Test

(CEA) Certified Ergonomics Associate Practice Test

CEA Office Ergonomics & Computer Use 3