CES Ergonomic Tools, Equipment & Technology 1

Question 1

Which tool is used to measure joint angles during ergonomic posture assessments?

Accepted Answer

Goniometer

Answer

A goniometer measures the angle of a joint in degrees, allowing ergonomists to quantify posture deviations during task observations.

Question 2

Wearable inertial measurement units (IMUs) in ergonomic assessments primarily measure:

Accepted Answer

Segment orientation and movement kinematics

Answer

IMUs contain accelerometers and gyroscopes that track body segment orientation and movement, enabling continuous posture monitoring without a lab.

Question 3

Surface electromyography (sEMG) is used in ergonomics primarily to assess:

Accepted Answer

Muscle activation and fatigue

Answer

sEMG records electrical signals from contracting muscles, allowing ergonomists to quantify muscle load, identify overactivation, and monitor fatigue development.

Question 4

A force plate is most useful in an ergonomic evaluation for assessing:

Accepted Answer

Ground reaction forces and weight distribution during standing or lifting

Answer

Force plates measure the vertical, horizontal, and shear forces exerted through the feet, providing data on balance, weight shift, and postural loading.

Question 5

Sit-stand workstations are most beneficial when they are used:

Accepted Answer

With alternating sitting and standing throughout the day (e.g., 30-min intervals)

Answer

Alternating between sitting and standing at approximately 30-minute intervals prevents prolonged static loading in either posture and improves circulation.

CES - Certified Ergonomic Specialist Practice Test

CES - Certified Ergonomic Specialist Practice Test

CES Ergonomic Tools, Equipment & Technology 1