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Human Factors > Part 1 > Flashcards

Part 1 Flashcards

1
Q

The need of human factors training to all aviation personnel is of prime importance because:
A) Human errors have an intermediate adverse effect in aircraft maintenance.
B) It aims at optimizing the relationship between maintenance personnel and
systems with a view to improving safety, efficiency and well-being.
C) It determines the line between blameworthy and blameless actions.

A

B) It aims at optimizing the relationship between maintenance personnel and
systems with a view to improving safety, efficiency and well-being.

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2
Q

An Individual is exposed to a Noise dose when:
A) He or she is exposed to sound level over 70 dB within an 8 hour time weighted
average sound level
B) He or she is exposed to sound level over 60 dB within an 8 hour time weighted
average sound level
C) He or she is exposed to sound level over 85 dB within an 8 hour time weighted
average sound level

A

C) He or she is exposed to sound level over 85 dB within an 8 hour time weighted
average sound level

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3
Q

Sounds are recognized by the brain through:
A) The functional combination of the outer ear, the middle ear and the Ossicles
that receive vibrations and turn the signals into nerve impulses that the brain
recognizes as sound.
B) The functional combination of the outer ear and the middle ear that receive
vibrations and turn the signals into nerve impulses that the brain recognizes as
sounds.
C) The functional combination of the Outer ear, middle ear and inner ear, that
receive vibrations and turn the signals into nerve impulses that the brain
recognizes as sound.

A

C) The functional combination of the Outer ear, middle ear and inner ear, that
receive vibrations and turn the signals into nerve impulses that the brain
recognizes as sound.

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4
Q

The hearing-an aspect of the ear function-is impaired because:
A) Mucus is built up on the outer ear through the eustachian tube
B) Mucus is built up on the inner ear through the eustachian tube
C) Mucus is built up on the middle ear through the eustachian tube

A

C) Mucus is built up on the middle ear through the eustachian tube

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5
Q

Human factors is the application of knowledge of how we see,hear,think and
physically function to the design of tools, products and systems that are conducive to
human task performance and protective of human health and safety.
A) True
B) False

A

A) True

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6
Q

A positive approach towards reducing human errors, implies the understanding in
that:
A) Technician should learn from their own mistakes
B) Dissemination of information on human errors made by others is of vital
importance
C) Both of the above

A

C) Both of the above

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7
Q

Which of the following can degrade/affect vision most?
A) Long periods of inspection.
B) Working condition.
C) Long working shifts.
D) Interruptions.

A

A) Long periods of inspection.

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8
Q

Aviation accidents due to Technical Problems appear to be:
A) Increasing.
B) Declining.
C) Remain steady.
D) Fluctuating within limits.

A

B) Declining.

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9
Q

The amount of light that is allowed to enter the eye is controlled:
A) By the cornea
B) By the Iris
C) By the retina
D) By the Iris and retina

A

B) By the Iris

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10
Q

The “error chain” theory refers to
A) a company is only as good as its weakest employee or employees, and removal
of that/those employee from the chain should prevent errors
B) errors are caused by a chain of linked events, and the breaking of one link in the
chain will prevent the error
C) a chain of errors within an organizations can be investigated, and similar errors
prevented by determining a common link between them.

A

B) errors are caused by a chain of linked events, and the breaking of one link in the
chain will prevent the error

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11
Q

The symptom of hypermetropia is:
A) A blurred vision when looking at closed objects.
B) A blurred vision when looking at objects at a distance.
C) Inability of the eye to determine the kind of colours.
D) Inability

A

A) A blurred vision when looking at closed objects.

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12
Q

The aim of human factors programs within an organizations is
A) to reduce costs by increasing efficiency, safety and quality and decreasing
waste through human error
B) to optimize the relationship between maintenance personnel and systems with a
view to improving safety, efficiency and well-being
C) to safeguard the health and safety of maintenance personnel by reducing
accidents in the workplace

A

B) to optimize the relationship between maintenance personnel and systems with a
view to improving safety, efficiency and well-being

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13
Q

An Individual is exposed to a Noise dose when:
A) He or she is exposed to sound level over 70 dB within an 8 hour time weighted
average sound level
B) He or she is exposed to sound level over 60 dB within an 8 hour time weighted
average sound level
C) He or she is exposed to sound level over 80 dB within an 8 hour time weighted
average sound level

A

C) He or she is exposed to sound level over 80 dB within an 8 hour time weighted
average sound level

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14
Q

The eustachian tube of the ear connects:
A) The outer ear with the inner ear
B) The middle ear with the back of the nose and mouth
C) The outer ear with auditory nerve

A

B) The middle ear with the back of the nose and mouth

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15
Q

According to statistics,human error has been identified as a casual factor of what
percentage of aviation accidents and incidents.
A) 60-80 %
B) 40-50 %
C) 50-60 %
D) More than 80 %

A

A) 60-80 %

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16
Q

The symptom of colour defective vision (normally referred to incorrectly as color
blindness) is the difficulty of the individual to distinguish between
A) Yellow and green
B) Blue and green
C) Red and yellow
D) red and green

A

D) red and green

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17
Q

Perception involves the organization and interpretation of:
A) Sensory data
B) Decision making process
C) The iconic memory

A

A) Sensory data

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18
Q

Ossicles are part of:
A) Middle ear
B) Inner ear
C) Outer ear

A

B) Inner ear

19
Q

Vibrations from the eardrum to the fluid of the inner ear is transmitted through:
A) The auditory nerve and outer ear
B) The eustachion tube and middle ear
C) The middle ear and the ossicles

A

C) The middle ear and the ossicles

20
Q

The hub of the SHEL model of human factors is
A) liveware
B) hardware
C) enviroment

A

A) liveware

21
Q

Murphy’s law can be regarded as the notion
A) “If something can go wrong it will”
B) “If something goes wrong I am certain to get the blame”
C) “It can never happen to me”

A

A) “If something can go wrong it will”

22
Q

In terms of hearing protection, noise level can be reduced by wearing ear muffs,
because they provide better protection -compared to ear plugs- by:
A) 80%
B) 100%
C) 50%

A

B) 100%

23
Q

The amount of light that is allowed to enter the eye is controlled:
A) By the Cornea
B) By the Ires
C) By the retina
D) By the Ires and retina

A

B) By the Ires

24
Q

The basic function of the ear is to:
A) Process sound waves to the middle ear, and auditory nerve
B) Process sound waves and protect the cochlea and ear drum from high pitch
sounds
C) Detect sounds and contribute to balance of the individual through sensing
acceleration

A

C) Detect sounds and contribute to balance of the individual through sensing
acceleration

25
Q

If an engineer is to work in a very darkened environment for a long time his visual
acuity is better or is improved.
A) After 20-25 minutes until eyes become light adapted.
B) After 30-40 minutes until eyes become dark adapted.
C) After 10-15 minutes until eyes become dark adapted.
D) After 5-10 minutes until eyes become dark adapted.

A

B) After 30-40 minutes until eyes become dark adapted.

26
Q

Human factors refers to the study of:
A) Financial benefits of the maintenance organization through improving safety
issues in maintenance.
B) Human capabilities and limitations in the work place in Aviation maintenance.
C) Aircraft incidents and accidents in the Aviation community.

A

B) Human capabilities and limitations in the work place in Aviation maintenance.

27
Q

In terms of hearing protection, noise level can be reduced by wearing ear muffs
because they provide better protection by reducing noise level
A) By 100% compared to ear plugs
B) By 50% compared to ear plugs
C) By 80% compared to ear plugs
D) By 30% compared to ear plugs

A

A) By 100% compared to ear plugs

28
Q

The ear is used to detect
A) acceleration
B) speed
C) neither acceleration or speed

A

A) acceleration

You can hear a car speeding up,but you cannot tell its speed.

29
Q

The two functions of the ear are:
A) To process sound waves to the ossicles, and maintain the balance.
B) Detect sounds followed by balancing through sencing acceleration of sound
waves.
C) Protect the cochlea and ear drum from high pitch sounds
D) To process sound waves to the auditory nerve.

A

B) Detect sounds followed by balancing through sencing acceleration of sound
waves.

30
Q

Human factors refers to the study of
A) Company profitability as first priority followed by safety issues.
B) Human capabilities and limitations.
C) Fitting the man to the job and the job to the man.
D) B and C.

A

D) B and C.

31
Q

Hypoxia, which impairs rapidly the sensitivity of the eye robs is caused by:
A) Cigarette smoking and alcohol
B) Dusty working environment
C) Insufficient lighting in the work area
D) B + C

A

A) Cigarette smoking and alcohol

32
Q

Sound waves cause vibration:
A) In the ear drum
B) In the middle ear
C) In the auditory canal

A

A) In the ear drum

33
Q

The scientific study of measurements of the human body is known as…
A) anthropometrics.
B) ergonomics.
C) physiology.

A

A) anthropometrics.

34
Q

Acceptable noise levels in hangers are in the range of…
A) 90 to 125 dB.
B) 70 to 75 dB.
C) 70 to 95 dB.

A

B) 70 to 75 dB.

35
Q

What is the minimum level of dB that can cause hearing damage?

A

90dB

36
Q

What does the acronym SHEL stand for?

A

Software, Hardware, Environment, Liveware

37
Q

What are the 4 human senses that affect the person’s ability to perform maintenance
tasks?

A

vision, hearing, touch, smell

38
Q

Mention 3 factors that increase the physiological fatigue.

A

lack of sleep, working during sleeping hours, working overtime, rotating shifts,
complexity of tasks, poor environmental factors, poor diet and health, stress.

39
Q

Human factors is the application of knowledge of how we see,hear,think and
physically function to the design of tools, products and systems that are conducive to
human task performance and protection of human health and safety. Is this true or
False?

A

True.

40
Q

The “error chain” theory refers to…
A) a company is only as good as its weakest employee or employees, and removal
of that/those employee from the chain should prevent errors.
B) errors are caused by a chain of linked events, and the breaking of one link in the
chain will prevent the error.
C) a chain of errors within an organizations can be investigated, and similar errors
prevented by determining a common link between them.

A

B) errors are caused by a chain of linked events, and the breaking of one link in the
chain will prevent the error.

41
Q

What is a possible effect on a person’s vision due to fatigue?
A) Less sharp vision.
B) Extreme sharp vision.
C) Colour-defect vision.

A

A) Less sharp vision.

42
Q

Aviation accidents due to Technical Problems appear to be decreasing, True or
False?

A

True.

43
Q

According to Murphy’s Law :’’ If anything can go wrong, it will go wrong’’, how
can you explain that in your own words?

A

Even if we think that something might not fail because there is a small possibility of it failing, that can still and will probably happen. This is why we should be prepared for every scenario.

44
Q

What is the role of Hardware, Software and Environment, in the SHEL Model?
A) To assist the performance and respect the limitations of Liveware.
B) To point out the limitations of Liveware.
C) To control the performance of Liveware.

A

A) To assist the performance and respect the limitations of Liveware.

Human Factors (4 decks)

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