CPE Anthropometry & Physical Dimensions in Ergonomics 2

Question 1

For designing hand tool handles, which anthropometric measurement is most relevant for determining optimal grip diameter?

Accepted Answer

Hand grip circumference (maximum circumference of the closed hand)

Answer

Hand length from wrist crease to middle fingertip

Answer

Hand breadth at the metacarpal heads

Answer

Index finger length

Question 2

In ergonomic design, 'accommodation percentage' refers to:

Accepted Answer

The proportion of the target population whose dimensions fall within the design limits

Answer

The adjustment range built into a workstation

Answer

The comfort rating assigned to a product by test users

Answer

The number of distinct postures a workstation can support

Question 3

Knee clearance height beneath a work surface should be designed based on which anthropometric reference?

Accepted Answer

95th percentile male sitting knee height

Answer

5th percentile female sitting knee height

Answer

50th percentile combined sitting knee height

Answer

Average of male and female 75th percentile values

Question 4

When applying US anthropometric data to design workstations for a predominantly Asian workforce, the primary concern is:

Accepted Answer

Systematic differences in body proportions and absolute dimensions between populations

Answer

Measurement error rates in the source database

Answer

Seasonal variation in body dimensions that affects the data

Answer

Age-related measurement drift in the source survey participants

Question 5

Popliteal height is defined as the distance from:

Accepted Answer

The floor to the underside of the thigh just behind the knee

Answer

The top of the head to the floor in a seated posture

Answer

The floor to the top of the thigh while seated

Answer

The seat surface to the top of the shoulder while seated

Question 6

The impact of clothing and personal protective equipment (PPE) on workstation anthropometric design is typically addressed by:

Accepted Answer

Adding functional allowances to nude anthropometric measurements to account for added bulk

Answer

Using clothed subject measurements exclusively for all design calculations

Answer

Reducing accommodation percentile targets to compensate for PPE movement restriction

Answer

Ignoring clothing effects since PPE thickness is below measurement resolution

Question 7

Which statement correctly distinguishes static anthropometry from dynamic anthropometry?

Accepted Answer

Static anthropometry measures body dimensions in standardized rest postures; dynamic anthropometry captures dimensions during movement and task performance

Answer

Static anthropometry is inherently less accurate than dynamic measurements due to postural variability

Answer

Dynamic anthropometry is used exclusively for military equipment design applications

Answer

Static measurements are always numerically larger than equivalent dynamic measurements