MHC Ergonomics & Human Factors 3

Question 1

Which condition describes 'contact stress' as an ergonomic hazard in material handling?

Accepted Answer

Pressure on soft tissue caused by resting against a hard edge or object

Answer

Sustained whole-body vibration from operating a forklift

Answer

Heat stress from working in a high-temperature warehouse

Answer

Eye strain from reading small labels on inventory items

Question 2

What is the ideal vertical height zone for the most ergonomically safe manual lifting?

Accepted Answer

Knuckle height to shoulder height

Answer

Floor level to knee height

Answer

Shoulder height to maximum overhead reach

Answer

Any height as long as the load is under 25 lbs

Question 3

Which of the following is a primary goal of an ergonomics program in a material handling environment?

Accepted Answer

Reducing worker injury rates while maintaining or improving productivity

Answer

Increasing production speed above baseline targets

Answer

Eliminating all manual handling tasks from the facility

Answer

Minimizing the number of breaks workers are permitted to take

Question 4

Whole-body vibration (WBV) experienced by forklift operators is primarily associated with increased risk of:

Accepted Answer

Lower-back disorders and spinal degeneration

Answer

Carpal tunnel syndrome in the wrists

Answer

Hearing loss and tinnitus

Answer

Eye strain and reduced visual acuity

Question 5

Which PPE item is specifically recommended to reduce hand-arm vibration (HAV) exposure when using vibrating material handling tools?

Accepted Answer

Anti-vibration gloves

Answer

Cut-resistant gloves

Answer

Chemical-resistant gloves

Answer

Thermal insulating gloves

Question 6

An ergonomic Job Hazard Analysis (JHA) for a picking task should include evaluation of all of the following EXCEPT:

Accepted Answer

Worker's annual performance review score

Answer

Reach distances required to access inventory

Answer

Frequency and weight of items picked per hour

Answer

Postures assumed during the picking cycle

Question 7

Which measure quantifies the ratio of the actual task demands to the NIOSH Recommended Weight Limit and helps identify high-risk lifts?

Accepted Answer

Lifting Index (LI)

Answer

Ergonomic Risk Score (ERS)

Answer

Task Severity Rating (TSR)

Answer

Body Mechanics Quotient (BMQ)