Office Ergonomics & Computer Use Flashcards
7 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Office Ergonomics & Computer Use flashcards as text
According to ergonomic guidelines, how far should a computer monitor typically be positioned from the user's eyes?
Answer: 20–40 inches
A viewing distance of 20–40 inches (approximately arm's length) is recommended to reduce eye strain and accommodate comfortable focus.
Which posture-related risk is most commonly associated with using a mouse positioned too far from the keyboard?
Answer: Shoulder abduction and elevated arm
Reaching outward for a distant mouse causes shoulder abduction, raising the arm and loading shoulder muscles and the rotator cuff.
What is the primary purpose of document holders placed adjacent to computer monitors?
Answer: Reduce neck rotation and accommodation changes between source and screen
Document holders position reference materials at the same height and distance as the screen, minimizing repetitive neck movement and focal adjustments.
A supervisor notices workers frequently craning their necks upward to view their monitors. The most likely root cause is:
Answer: Monitor tops are positioned above the user's eye level
When the top of the monitor is above eye level, users must extend the neck to view the screen, causing cervical strain.
Which type of chair adjustment has the greatest impact on reducing low-back compressive forces during computer work?
Answer: Backrest recline angle
Reclining the backrest to approximately 100–110° reduces lumbar disc pressure compared to an upright 90° posture.
An ergonomist identifies that a call-center worker holds the telephone between ear and shoulder while typing. The recommended solution is:
Answer: Provide a headset or speakerphone to free both hands
A headset eliminates the need to cradle the phone, preventing lateral neck flexion and trapezius muscle overload.
The concept of 'neutral posture' in computer ergonomics primarily aims to:
Answer: Maintain joints near their mid-range positions to reduce tissue stress
Neutral posture keeps joints near their mid-range, where muscles and tendons operate most efficiently and with the least biomechanical stress.