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

Fitts's Law

Answer

Population stereotype

Answer

Signal detection theory

Question 2

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

Accepted Answer

Target distance and size

Answer

Target color and contrast

Answer

User handedness and dominant eye

Answer

Background noise and lighting

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

Color contrast optimization

Answer

Maximum peripheral vision angle

Answer

Minimum glare reflection angle

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 highly polished metal surface for durability

Answer

A tapered profile that is widest at the tip

Answer

A handle longer than the user's hand span

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

The cost-benefit ratio of a product's features

Answer

The lifespan of a product before it requires replacement

Answer

The range of users a product is priced to reach

Question 6

In noise exposure assessment for product design, the A-weighting filter is applied because:

Accepted Answer

It approximates the human ear's sensitivity across frequencies

Answer

It amplifies low-frequency sounds for better measurement accuracy

Answer

It eliminates background noise from measurements

Answer

It converts sound pressure levels to decibels

Question 7

When designing for legibility of text on a display panel, which factor has the greatest impact on reading speed at a fixed viewing distance?

Accepted Answer

Font color relative to background (contrast ratio)

Answer

Number of font typefaces used on the panel

Answer

Alphabetical ordering of text items

Answer

Panel surface texture