Physical Ergonomics and HCI: Enhance User Comfort and Minimize Strain

Question 1

What is the primary purpose of using a wrist rest while working on a computer?

Accepted Answer

Reduce strain on the wrists and forearms

Answer

Increase typing accuracy

Answer

Improve overall comfort

Answer

Prevent carpal tunnel syndrome

Question 2

When designing an ergonomically sound workstation, which of the following factors is NOT a key consideration?

Accepted Answer

Room temperature

Answer

Chair height

Answer

Keyboard position

Answer

Monitor distance

Question 3

What is the primary objective of the 'neutral posture' concept in ergonomics?

Accepted Answer

To minimize the risk of musculoskeletal disorders

Answer

To reduce muscle fatigue

Answer

To improve circulation

Answer

To enhance productivity

Question 4

What is the significance of the 'reach envelope' in ergonomic design?

Accepted Answer

Defines the area within which users can comfortably reach without straining

Answer

Determines the optimal height of the keyboard

Answer

Assesses the workspace for potential hazards

Answer

Measures the user's range of motion

Question 5

Which of the following is NOT an advantage of using adjustable furniture in an ergonomic workplace?

Accepted Answer

Eliminates the need for additional ergonomic accessories

Answer

Allows users to customize their workstations

Answer

Reduces the risk of musculoskeletal disorders

Answer

Improves productivity and comfort

Question 6

According to the NIOSH guidelines, what is the optimal height for a computer monitor?

Accepted Answer

Eye level

Answer

Chin level

Answer

Shoulder height

Answer

Elbow height

Question 7

What is the process of evaluating and improving the physical aspects of a work environment called?

Accepted Answer

Ergonomic assessment

Answer

Workplace analysis

Answer

Job analysis

Answer

Hazard assessment

Question 8

What is a standing workstation that allows users to alternate between sitting and standing called?

Accepted Answer

Sit-stand desk

Answer

Ergonomic desk

Answer

Active workstation

Answer

Adjustable desk

Question 9

Which of the following is NOT a recommended practice for reducing eyestrain in computer users?

Accepted Answer

Positioning the monitor directly in front of the user

Answer

Using an anti-glare screen filter

Answer

Adjusting monitor brightness to a comfortable level

Answer

Taking frequent breaks to focus on distant objects

Question 10

Which principle of physical ergonomics aims to reduce prolonged, fixed body positions?

Accepted Answer

Minimize static postures

Answer

Encourage frequent movement

Answer

Promote good posture

Answer

Use repetitive motions effectively

Question 11

What is the primary function of a glare filter attached to a computer monitor?

Accepted Answer

Reduce eye strain caused by screen glare

Answer

Protect the monitor from physical damage

Answer

Enhance the display's color accuracy

Answer

Block harmful blue light emissions

Question 12

Why is considering anthropometric data crucial in human-computer interaction (HCI)?

Accepted Answer

To design systems that accommodate various body sizes and shapes

Answer

To simplify the manufacturing process

Answer

To ensure compatibility with all hardware devices

Answer

To enhance the visual appeal of the system

Question 13

Which technique is commonly used to assess user comfort and posture while interacting with a user interface?

Accepted Answer

Posture analysis

Answer

Usability testing

Answer

Eye-tracking analysis

Answer

Cognitive walkthrough

Question 14

How does knowledge of human physiology and anatomy inform our understanding of physical ergonomics in HCI?

Accepted Answer

It helps us understand how the body responds to physical demands like prolonged sitting or repetitive motions.

Answer

It's not relevant to physical ergonomics, which focuses on designing physical objects.

Answer

It helps us create new materials and technologies for ergonomic products.

Answer

It's only relevant to designing medical devices.

Question 15

What common computer-use injury affects the wrist and hand, often caused by prolonged keyboard and mouse use?

Accepted Answer

Carpal Tunnel Syndrome

Answer

Epicondylitis

Answer

Tendonitis

Answer

Bursitis

Question 16

Which of the following is a fundamental principle of physical ergonomics in HCI?

Accepted Answer

Design systems that align with the user's physical capabilities and limitations.

Answer

Prioritize aesthetics over functionality.

Answer

Use contrasting colors and large fonts for visual appeal.

Question 17

Which of the following is a prevalent musculoskeletal disorder associated with extended computer use and improper ergonomic practices?

Accepted Answer

Carpal tunnel syndrome

Answer

Hearing loss

Answer

Migraine headaches

Question 18

Identify the optimal posture for prolonged sitting at a computer workstation.

Accepted Answer

Feet flat on the floor, back upright and supported, shoulders relaxed

Answer

Feet on a footrest, back tilted, shoulders forward

Answer

Feet crossed, back hunched, shoulders tense

Question 19

Which of the following is a notable benefit of utilizing an ergonomic keyboard?

Accepted Answer

Reduced risk of developing repetitive strain injuries

Answer

Lower acquisition cost

Answer

Enhanced visual appeal

Answer

Increased typing speed

Question 20

Which factors contribute to a user's physical comfort when interacting with a computer?

Accepted Answer

Input device placement, lighting conditions, chair design, and environmental factors

Answer

Environmental factors only

Answer

Chair design and lighting conditions only

Answer

Input device placement only

Question 21

What is the primary purpose of a footrest in an ergonomic workstation?

Accepted Answer

To provide support to the feet and alleviate leg fatigue

Answer

To elevate the user's height

Answer

To improve overall posture

Answer

To serve as a storage space for office supplies

Question 22

Which of the following is NOT a known risk factor for developing carpal tunnel syndrome?

Accepted Answer

Using a mouse with an ergonomic wrist rest

Answer

Repetitive hand and wrist movements

Answer

Prolonged use of computers

Answer

Working with vibrating tools

Question 23

What is the recommended duration for a microbreak to prevent physical strain?

Accepted Answer

5-15 minutes

Answer

1-2 minutes

Answer

20-30 minutes

Answer

45-60 minutes

Question 24

Which of the following is a common cause of neck pain among computer users?

Accepted Answer

Poor posture while sitting at the computer

Answer

High mouse sensitivity

Answer

Eye strain

Answer

Keyboard height