MHC Ergonomics & Human Factors 2

Question 1

Which work practice best reduces cumulative trauma disorders (CTDs) in a material handling facility?

Accepted Answer

Incorporating scheduled micro-breaks and job rotation

Answer

Requiring workers to maintain a constant pace throughout the shift

Answer

Limiting the number of workers on a shift to increase efficiency

Answer

Assigning the heaviest tasks to the most experienced workers

Question 2

What is the primary purpose of a 'lift assist device' in a warehouse?

Accepted Answer

To reduce the manual force required to lift and position loads

Answer

To increase a worker's grip strength

Answer

To train workers in proper body mechanics

Answer

To track inventory weights in real time

Question 3

Awkward postures in material handling are defined as positions that:

Accepted Answer

Deviate joints significantly from neutral alignment

Answer

Keep joints within their normal range of motion

Answer

Require two workers to complete a task safely

Answer

Are performed at waist height with minimal reach

Question 4

Which anthropometric principle is most important when designing ergonomic workstations for material handling?

Accepted Answer

Designing for the 5th to 95th percentile range of workers

Answer

Designing for the average worker

Answer

Designing for the tallest worker on the team

Answer

Designing for the lowest-paid worker classification

Question 5

Which symptom is a common early warning sign of a work-related musculoskeletal disorder that workers should report immediately?

Accepted Answer

Persistent tingling, numbness, or aching in the hands or back

Answer

Occasional fatigue at the end of a full shift

Answer

Brief muscle soreness following new physical activity

Answer

Mild hunger during long shifts without scheduled breaks

Question 6

In ergonomic risk assessment, what does the acronym 'RULA' stand for?

Accepted Answer

Rapid Upper Limb Assessment

Answer

Repetitive Use Load Analysis

Answer

Risk-Utility Lift Adjustment

Answer

Rotation and Unloading Labor Audit

Question 7

When manually pushing or pulling a cart, which technique best reduces lower-back and shoulder strain?

Accepted Answer

Keeping elbows bent and using body weight rather than arm strength

Answer

Pulling the cart while walking backward

Answer

Extending arms fully forward and leaning over the handle

Answer

Gripping the handle at or above shoulder height