Industrial and Product Design Ergonomics & Human Factors 2

Question 1

Which principle of human factors design states that displays should map logically to their corresponding controls?

Accepted Answer

Compatibility principle

Answer

The compatibility principle holds that the spatial or conceptual relationship between controls and their displays should match user expectations to reduce errors.

Question 2

Fitts's Law predicts that the time to acquire a target is affected by:

Accepted Answer

Target distance and size

Answer

Fitts's Law states that movement time increases with greater distance to the target and decreases as target size increases, commonly applied to UI and tool design.

Question 3

A designer sets the optimal viewing angle for a control panel display at 15° below the horizontal line of sight. This is based on which ergonomic principle?

Accepted Answer

Normal line of sight in a relaxed head position

Answer

The natural resting position of the eyes is approximately 10°–15° below horizontal, so placing primary displays in this zone reduces neck and eye strain.

Question 4

Which handle design characteristic most effectively reduces grip fatigue during prolonged tool use?

Accepted Answer

A diameter matched to the hand size of the target user

Answer

A handle diameter matched to the user's grip span maximizes contact area, distributes force evenly, and minimizes the muscular effort required to maintain grip.

Question 5

The concept of 'affordance' in product design, introduced by James Gibson and popularized by Don Norman, refers to:

Accepted Answer

The perceived properties of an object that suggest how it should be used

Answer

An affordance is a relationship between an object's physical properties and a user's perception of possible actions, such as a door handle that signals pulling.

Industrial and Product Design Practice Test

Industrial and Product Design Practice Test

Industrial and Product Design Ergonomics & Human Factors 2