BSIE Ergonomics & Human Factors Engineering 2

Question 1

What is the purpose of a time-and-motion study in industrial engineering?

Accepted Answer

To determine standard times for tasks by observing and timing work elements

Answer

Time-and-motion studies break jobs into elements, time them with a stopwatch, apply performance ratings, and add allowances to establish standard times.

Question 2

In human reliability analysis, what does a Human Error Probability (HEP) of 0.01 mean?

Accepted Answer

There is a 1% probability of human error on a given task

Answer

An HEP of 0.01 means there is a 1-in-100 probability that an operator will make an error when performing a specific task under defined conditions.

Question 3

Which principle of motion economy suggests that both hands should begin and end their motions simultaneously?

Accepted Answer

Principle of simultaneous hand motions

Answer

The principle of simultaneous hand motions reduces idle time and cognitive load by synchronizing the start and finish of both hands' movements.

Question 4

What is 'vigilance decrement' in human factors engineering?

Accepted Answer

The decline in detection performance during prolonged signal-detection tasks

Answer

Vigilance decrement refers to the decrease in an operator's ability to detect rare signals as the duration of sustained attention monitoring increases.

Question 5

Which body posture is most associated with lower back disorder risk on the job?

Accepted Answer

Sustained forward trunk flexion combined with twisting

Answer

Combined trunk flexion and rotation increases spinal compressive and shear forces substantially, raising the risk of intervertebral disc injury.

BSIE - Bachelor of Science in Industrial Engineering Practice Test

BSIE - Bachelor of Science in Industrial Engineering Practice Test

BSIE Ergonomics & Human Factors Engineering 2