Office Ergonomics & Computer Workstations Flashcards
6 cards from real CES practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Office Ergonomics & Computer Workstations flashcards as text
What is the recommended minimum seat pan depth adjustment range for office chairs?
Answer: 2–4 inches
A seat pan depth range of 2–4 inches accommodates variation in thigh length while maintaining 2–3 finger-widths of clearance behind the knee.
The 20-20-20 rule for computer users recommends:
Answer: Every 20 minutes look at something 20 feet away for 20 seconds
The 20-20-20 rule helps reduce digital eye strain by giving the ciliary muscles a rest through distant focusing every 20 minutes.
An ergonomic mouse should be selected primarily based on which criterion?
Answer: Hand size and grip style of the user
Mouse fit to hand size and grip style (palm, claw, or fingertip) is the primary criterion because a poorly sized mouse causes sustained awkward postures.
Which type of office lighting arrangement best reduces veiling reflections on monitor screens?
Answer: Luminaires placed parallel to and between workstations
Placing overhead luminaires parallel to workstation rows and between workstations prevents direct overhead light from reflecting off monitor screens into the user's eyes.
Which standard provides ergonomic guidelines specifically for office workstations with display screen equipment in the US?
Answer: ANSI/HFES 100
ANSI/HFES 100 (Human Factors Engineering of Computer Workstations) provides US-specific dimensional and design recommendations for display screen workstations.
A footrest is most beneficial when:
Answer: The chair cannot be raised enough to support neutral posture without leaving feet dangling
When desk height is fixed and the chair must be raised to reach the keyboard, a footrest supports the feet and restores thigh-to-torso angle.