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Homework answers / question archive / Lamar University-INEN3380Exam3StudyGuideQuiz5 1)The design for the is cheapest, but will accommodate, perhaps, only the middle 50 to 60% of the population

Lamar University-INEN3380Exam3StudyGuideQuiz5 1)The design for the is cheapest, but will accommodate, perhaps, only the middle 50 to 60% of the population

Electrical Engineering

Lamar University-INEN3380Exam3StudyGuideQuiz5

1)The design for the is cheapest, but will accommodate, perhaps, only the middle 50 to 60% of the population.

 

 

average

 

 

extremes

 

 

middle

 

 

adjustability

2. A            maintains the component it in a known, fixed, proper position and allows the use of both hands in assembly.

 

 

jig

 

 

transit

 

 

fixture

3. Control movement without system response is known as        .

 

 

Control slippage

 

 

dead band

 

 

deadspace

 

 

what am I going to do

4. The optimum line of sight is roughly     degrees below the horizontal.

 

 

10

 

 

12

 

 

15

 

 

19

5. The design for        will accommodate all but the largest or smallest 10% of the    population.

 

 

average

 

 

extremes

 

 

middle

 

 

adjustability

 

6. A trigger finger is a form of tendinitis resulting from a workstation in which the distal phalanx of the index finger must be bent and flexed against resistance before more proximal phalanges are flexed.

True False

7. Your team is designing a seat for an airline, you have been instructed that the seat must accommodate the 95th percentile for men and women in regards to the width of the seat.

12.3"

12.1"

16"

 

17.2" A.C.

 

Homework

 

Chapter 5 Design of The Workplace, Equipment And Tools Questions

  1. What seat width would accommodate 90% of adults?
  2. Compare and contrast the three different design strategies.
  3. Explain how a proper worksurface height would be determined.
  4. What are the most critical features in a good ergonomic chair? Which should be adjustable?
  5. What is the principle behind the design of a saddle seat?
  6. What is lordosis and how does it relate to a lumbar pad?
  7. What is the principle behind anti-fatigue mats?
  8. What is the principle behind the proper layout of bins, parts, and tools on a work surface?
  9. What is a fixture so important in workplace? List as many reasons as possible.
  10. What does Warrick’s principle refer to in designing controls and displays?

 

  1. What is the optimum line of sight?
  2. List three principles for arranging components on a panel.
  3. What is the range effect?
  4. List the three principles for effective control-display compatibility.
  5. What is operational coding?
  6. What is the main disadvantage of tactile controls?
  7. What is control movement without system response known as?
  8. If the CR ratio is increased from 1.0 to 4.0, what happens to travel time, adjust time and total time?
  9. What are the three most important task factors leading to cumulative trauma disorders?
  10. What is the most important factor leading to white finger?
  11. What is trigger finger?
  12. Describe the progression of the disease state for carpal tunnel syndrome.
  13. Design an ergonomic handle indicating all of the principles used in the design.
  14. What are the key concerns in the design of a power tool?

 

 

 

Chpt 6 Quiz

 

  1. It has been proven that color will have a psychological effect on people. For example, yellow is the accepted color of butter, therefore margarine must also be made yellow.

True

 False

 

  1. Workers can be protected from vibration through the introduction of supports to cushion the body and dampen the vibrations, alterations of body posture to lessen the impact of the vibrations, and reduction of the forces causing the vibrations.

True

 False

 

  1. What is the approximate decimal value of a grinder being used to grind high-carbon steel. (In decibels)

 

 

70 to 75

 

 

8 to 85

 

 

85 to 90

 

 

95 to 100

 

 

100 to 105

  1. Sodium vapor lamps have fairly poor color rendering, a shift in frequencies as compared to a standard source such as daylight, and would probably not be suitable for certain inspection operations were color discrimination is necessary.

True

 False

  1.        noise is made up of frequencies covering a significant part of the sound spectrum, it can be both continuous and intermittent.

 

 

broadband

 

 

obtrusive

 

 

meaningful

 

 

intermittent

 

 

loud

 

  1. The quality of light and task performance is affected by the amount of gamma rays, the contrast and the visual light.

True

False

 

  1.         noise represents distracting sound that will have an impact workers and efficiency, but not on the workers hearing loss.

 

 

background

 

 

obtrusive

 

 

meaningful

 

 

intermittent

 

 

 

 

  1. According to OSHA law, how many continuous per day of 100 dBA sound level would be permitted.

one hour for every eight hours worked

two hours for every eight hours worked three"""

four"""

 

  1. Contrast and visibility are inversely related; as the contrast increases, visibility decreases.

 True    False

 

  1. The            is the range of temperatures and relative humidity s in which a worker, performing like work, would be comfortable.

 

 

 

humidity

 

 

exposure temperature

 

 

Environmental temperature

 

 

Thermal comfort zone

 

  1. The            is the ambient dry bulb temperature experienced by the worker.

 

 

 

humidity

 

 

exposure temperature

 

 

Environmental temperature

 

 

Thermal comfort zone

 

  1. The color        has the highest visibility.

 

 

Chapter 7 Quiz Study

 

1.             occurs when a direct comparison can be made, while an absolute judgment uses information stored in working memory.

relative judgment

foreseen judgment

sensitivity judgment

unbiased judgment

 

 

2.             is defined as saying there is saying there is no signal when the signal is present.

hit

miss

perception

memory

false alarm

correction rejection

 

3. The use of colors and flashing lights will help increase attention for visual displays.

True

False

 

4.            is the stage of the human information processing model that receives incoming stimuli.

perception

correction rejection

memory

redundancy

decision and response selection

 

 

 

5.         is defined as saying there is a signal when no signal is present.

 

 

hit

 

 

miss

 

 

perception

 

 

memory

 

 

false alarm

 

 

correction rejection

6.          is defined as saying there is no signal when no signal is present.

 

 

hit

 

 

miss

 

 

perception

 

 

memory

 

 

false alarm

 

 

correction rejection

7. In terms of the human operator, the bandwidth for motor-processing task could be as low as 6 to 7 bits per second are as high as        bits per second for speech communication.

 

 

20

 

 

30

 

 

 

40

 

 

50

 8.          is the reduction in informational content due to the alternatives not being equally likely.

 

 

redundancy

 

 

correction

 

 

memory

 

 

response execution

 

9. The reason for using patterns for a set of dolls in a control room is to rconform to OSHA guidelines.

True False

 

10. A       , moving pointer display is preferred.

 

 

moving-scale

 

 

fixed-scale

 

 

variable-scale

 

 

metric- scale

11. The main components of a good graphical user interface include the use of windows, icons, menus and placards, sometimes collectively termed WIMP.

True False

12. Recall can be improved by the use of     , which is the grouping of similar items.

 

 

memory

 

 

chunking

 

 

response execution

 

system redundancy

 

 

Short question and answer

 

 

1.         How can the informational content of a task be quantified?

 

2.         What is redundancy? Give a good everyday example of redundancy.

3.         Explain the five stages of the human information processing model.

4.         How do information processing stages act to prevent an information overload of the human operator?

5.         What are the four possible outcomes explained by signal detection theory?

6.         Give an example of a task to which signal detection theory can be applied. What effect would a shift in the criterion have on task performance?

7.         What is the meaning of sensitivity in signal detection theory? What techniques can be used to increase sensitivity in an inspection task?

8.         What techniques can be used to improve memory?

9.         What are some of the biases that may negatively affect a person’s decision making?

 

10.       What is compatibility? Give two everyday examples of compatibility.

11.       Compare and contrast the different types of attention.

13.       Under what conditions are auditory displays best used?

 

14.       What is the difference between absolute and relative judgement? What is the limitation in absolute judgement?

15.       What is the just noticeable difference and how does it relate to the level of the stimulus? JND is the minimum difference between two stimuli that can be distinguished. As the stimulus level

16.       Why is redundancy utilized for critical stimuli?

17.       Why is a fixed-scale, moving-pointer display preferred?

18.       What is the purpose of using patterns for a set of dials in a control room?

19.       What key features are used to increase attention in a visual display?

20.       What key features are used to increase attention in an auditory display?

 

21.       What are the tradeoffs between the different types of pointing devices?

22.       What are the main components of a good graphical user interface?

 

 

 

 

 

 

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