CIEE Workstation Design & Optimization 2

Question 1

When evaluating seated workstation height for keyboard use, the primary goal is to position the keyboard so that the worker's elbows are at approximately what angle?

Accepted Answer

90–110 degrees flexion with neutral wrists

Answer

Elbow angles of 90–110° with neutral wrists minimize forearm muscle loading and reduce risk of cumulative trauma at a keyboard workstation.

Question 2

A sit-stand workstation is being designed for a worker who is 5'2" tall. Which adjustment range for work surface height is most appropriate?

Accepted Answer

27–47 in (69–119 cm)

Answer

A range of approximately 27–47 inches accommodates shorter-statured users in both seated and standing postures.

Question 3

Which document is the primary ANSI/HFES standard used to guide the ergonomic design of computer workstations in the United States?

Accepted Answer

ANSI/HFES 100-2007

Answer

ANSI/HFES 100-2007 provides human factors engineering requirements specifically for computer workstations.

Question 4

When using a fixed-height workbench for precision assembly, an ergonomist determines the work surface is 4 inches too high for most workers. The best immediate control is to:

Accepted Answer

Lower the work surface or raise the workers using adjustable platforms

Answer

Engineering controls that adjust the workstation to fit the worker (lowering surface or raising worker) are preferred over administrative or PPE solutions.

Question 5

In a standing workstation used for light assembly work, the recommended work surface height relative to elbow height is:

Accepted Answer

At elbow height or 0–5 cm below

Answer

Light assembly work requires the hands to be at or just below elbow height to maintain neutral shoulder and wrist postures.

(CIEE) Certified Industrial Ergonomic Evaluator Practice Test

(CIEE) Certified Industrial Ergonomic Evaluator Practice Test

CIEE Workstation Design & Optimization 2