Workplace Ergonomic 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 Workplace Ergonomic flashcards as text
A production line ergonomic assessment reveals workers bending forward more than 45° for over 2 hours per shift. Which RULA body segment score does this primarily affect?
Answer: Trunk score
Trunk flexion greater than 20° increases the RULA trunk score, and flexion beyond 60° assigns the maximum trunk posture value.
Which ergonomic principle best explains why a slanted document holder placed beside the monitor reduces neck injuries for data-entry workers?
Answer: It reduces the angular distance the neck must travel between document and screen
Placing the document holder close to and at the same height as the monitor minimizes repetitive cervical rotation and flexion between the two viewing targets.
Which factor does NOT directly reduce the NIOSH Lifting Equation's Load Constant of 51 lbs (23 kg)?
Answer: Worker age over 40
The NIOSH RWL equation multipliers address posture, frequency, distance, asymmetry, and coupling — worker age is not a variable in the formula.
In an office ergonomics assessment, a worker's monitor is positioned 80 cm (about 31 inches) away. How does this compare to standard recommendations?
Answer: Acceptable — falls within the 50–100 cm recommended range
Standard ergonomic guidance recommends a viewing distance of approximately 50–100 cm (20–40 inches), so 80 cm is within the acceptable range.
What is the primary ergonomic benefit of using a height-adjustable (sit-stand) workstation?
Answer: Reduces static loading by allowing posture variation throughout the day
Sit-stand workstations reduce prolonged static posture by allowing workers to alternate sitting and standing, distributing musculoskeletal loading over time.
When selecting anti-fatigue matting for a standing workstation, which property is MOST important for effectiveness?
Answer: Compressibility and resilience that encourage micro-movements
Effective anti-fatigue mats are compressible yet resilient, encouraging subtle leg muscle contractions that improve circulation and reduce static fatigue.
A supervisor asks when ergonomic improvements should be evaluated after implementation. What is the best practice recommendation?
Answer: Immediately, and again at 30–90 days post-implementation
Post-implementation evaluation should occur immediately to confirm the change was installed correctly and again at 30–90 days to assess effectiveness on worker postures and discomfort.