Human Performance Exam 3

7/28/2019 Human Performance Exam 3

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Human Performance & Limitations

Exam 3 50 questions, time allowed 1 hour

1. Hyperventilation can cause:

(a) too much CO2 to make the blood too alkaline(b) too much O2 to make the blood too alkaline(c) too much CO2 to make the blood too acidic(d) too much O2 to make the blood too acidic

2. At what altitude does the percentage of oxygen in the atmosphere drop to50% ?

(a) it does not drop to 50%(b) 40,000 feet(c) 18,000 feet

(d) 10,000 feet

3. What is the time of useful consciousness for an average person with amedium work load if rapid decompression occurs at 25,000 feet?

(a) 4 to 8 minutes(b) 2 to 4 minutes(c) 30 seconds to 1 minute(d) 15 to 30 seconds

4. In what way does exposure to negative acceleration act on the body ?

(a) it result in a perception of pitch up(b) the sensory system will be able to asses the new lower speed of the

aircraft(c) it result in a perception of pitch down(d) the sensory system will be able to asses the new higher speed of the

aircraft

5. A good crew briefing will:

(a) involve as much information as possible(b) short and precise(c) involve the use of visual aids(d) only need cover variable items such as weather conditions

6. The purpose of the crew briefing is to:

(a) ensure that all crew members are present(b) give all crew members a time check(c) allocate responsibilities to crew members(d) cover only deviations from standard operating procedures

Bristol Groundschool Human Performance Exam 3


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7. A pilot who smokes:

(a) is more likely to experience hyperventilation(b) is less likely to experience hyperventilation(c) is more likely to experience hypoxia(d) is less likely to experience hypoxia

8. The lowest level at which a pressure breathing system is required is:

(a) 10,000 feet(b) 33,700 feet(c) 40,000 feet(d) 50,000 feet

9. The runway width at your home base is 45 metres. If you fly to an airfieldwhere the runway width is 27 metres you are likely to make:

(a) a high approach and overshoot

(b) a high approach and undershoot(c) a low approach and overshoot(d) a low approach and undershoot

10. Disorientation is most likely to occur:

(a) in IMC flight(b) transferring from IFR to VFR(c) only after aerobatic manoeuvres(d) transferring from VFR to IFR

11. When flying near a thunderstorm the actions taken by the crew to protectvision will include:

1. wear sunglasses2. turn up the cockpit lighting3. keep the field of vision inside the cockpit4. use facial curtains

(a) 1 and 2 only(b) 2 and 3 only(c) 3 and 4 only(d) 1, 2, 3 and 4



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12. Which of the following provide the body with energy ?

1. protein and carbohydrates2. vitamin A3. minerals and vitamins4. vitamin D

(a) 1 only(b) 1 and 2 only(c) 1, 2 and 3 only(d) 1, 2, 3 and 4

13. What lung capacity is expelled in a normal breath?

(a) 150 ml(b) 450 ml(c) 500 ml(d) 5 litres

14. Which of the following form part of the inner ear?

(a) saccule and utricle(b) semi-angular canals(c) eustachian tube(d) fovea

15. Cones are receptive to: Rods are located at:

1. colour retina2. colour fovea3. colour and low light fovea4. colour and low light retina

Which of the above combinations is correct ?

(a) 1.(b) 2.(c) 3.(d) 4.

16. In the event of rapid decompression at FL 310, what action should betaken?

(a) keep the passengers calm(b) inform ATC and request an immediate descent(c) don oxygen masks and immediately descend to MSA or below FL100(d) extinguish cigarettes and don oxygene make



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17. Altitude hypoxia is caused by:

(a) Daltons law(b) decompression sickness(c) the bends(d) decompression sickness and the bends

18. When looking at a close object:

(a) the lens flattens(b) the pupil becomes smaller(c) the cornea becomes more curved(d) the retina changes shape

19. The ossicles are situated in the:

(a) inner ear(b) middle ear(c) outer ear

(d) eyeball

20. The feeling of vertigo when flying causes the illusion of:

(a) turning while climbing(b) climbing while turning(c) straight and level flying while spinning(d) spinning while straight and level

21. Define 'cardiac output':

(a) stroke volume x heart rate(b) stroke volume x heart capacity(c) total volume of blood in the body(d) the amount of blood pumped by the heart per beat

22. What is the cardiac output with a heart rate of 72 beats per minute and astroke volume of 70 mls ?

(a) 0.504 litres(b) 504.0 litres(c) 50.4 litres(d) 5.04 litres

23. The illusion given by linear acceleration is a sense of:

(a) the aircraft is climbing(b) the aircraft is descending(c) the aircraft is tumbling(d) the aircraft is yawing



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24. If a pilot is being affected by flicker effect he should:

(a) close the eyes(b) dim the cockpit lights(c) turn off the strobe lights(d) turn on the autopilot

25. What is the time of useful consciousness at 35,000 feet when (i) sitting,(ii) moderately active and (iii) under rapid decompression respectively ?

(i) (ii) (iii)

(a) 20 seconds 30 seconds 45 seconds(b) 45 seconds 30 seconds 20 seconds(c) 60 seconds 45 seconds 10 seconds(d) 120 seconds 60 seconds 30 seconds

26. When would a pilot be more effective than a machine ?

(a) when detecting an unusual sensory input(b) when a system requires monitoring for a long period(c) if a quantitative decision has to be made(d) when a rapid response is required

27. Which of the following could cause a negative transfer of habit ?

(a) a pilot familiar with one type of aircraft where the fuel pump switchis forward for ON, converts to another type where the fuel pumpswitch is to the rear for ON.

(b) a habit of moving the pitch level in the wrong direction is moved fromone aircraft type to another

(c) a pilot applies previous knowledge, gained from experience, betweendifferent types of aircraft.

(d) a pilot doe not transfer any habits from one type of aircraft toanother.

28. Decompression sickness is caused by:

(a) increased carbon dioxide in the blood(b) decrease of oxygen in the blood(c) decrease of gas within the joints(d) increase of gas within the joints

29. Oxygen transfer at the alveoli is governed by:

(a) Boyle's Law(b) Charles's Law(c) Henry's Law(d) Fick's Law (gas diffusion)



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30. Which of the following statements is correct ?

1. Paradoxical sleep refreshes the brain, memory and body2. Paradoxical sleep decreases during the night

(a) neither statement is correct(b) both statements are correct

(c) only statement 1 is correct(d) only statement 2 is correct

31. Which of the following frequencies will cause the most distress to thehuman body?

(a) 1 - 100hz(b) 1 - 100Khz(c) 100 - 1000Khz(d) 1000 - 10000Khz

32. Anderson's model of the acquisition of experience proposes which of the

following stages ?

(a) Associative Imitative Skilled(b) Imitative Associative Automatic(c) Cognitive Associative Automatic(d) Cognitive Automatic Skilled

33. What is generally thought to be the worst sort of incapacitation when onfinal approach?

(a) gradual(b) sudden(c) severe(d) intense

34. Night vision may be reduced by the effects of altitude. Above what heightwill this begin to become apparent ?

(a) 18,000 feet(b) 8,000 feet(c) 35,000 feet(d) 40,000 feet

35. As altitude is increased above 10,000 feet in an unpressurised aircraftwhat significant change might a pilot notice?

(a) a sense of euphoria(b) onset of decompression sickness (DCS)(c) a reduction in light levels(d) an improvement in performance



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36. What is the duration of the short term memory?

(a) 1 minute(b) 1.5 minutes(c) 10 minutes(d) 20 seconds

37. Incapacitation is most dangerous when it is:

(a) rapid(b) insidious(c) acute(d) severe

38. Which of the following is located in the inner ear ?

1. Otolith2. Ossicles3. Eustachian tube

4. Sinuses

(a) 1 only(b) 1 & 3 only(c) 2 & 3 only(d) 3 & 4 only

39. When initiating a recovery from a spin, a pilot may have a sensation of:

(a) turning in the same direction as the spin(b) turning in the opposite direction as the spin(c) pitching up and turning(d) pitching down and turning

40. Which of the following would indicate the onset of hyperventilation ?

(a) cyanosis(b) dizzy feeling(c) slow rate of respiration(d) slow rate of heartbeat

41. The subcutaneous pressure receptors (proprioceptors) sense:

(a) the condition of the body(b) the true vertical of the body(c) the spatial orientation of the body(d) the environmental conditions around the body



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42. Which of the following is most likely to be the cause of decompressionsickness (DCS) ?

(a) altitudes above 18,000 feet in an unpressurised aircraft(b) climbing at greater than 500 feet per minute to greater than 18,000

feet(c) altitudes above 5,000 feet in an unpressurised aircraft

(d) temperatures greater than +24C above 5,000 feet

43. When on the final approach during bad weather a pilot suffers fromhyperventilation. The most appropriate action to combat the effects ofhyperventilation would be:

(a) declare a 'Mayday'(b) go to 100% oxygen and go around(c) regulate the depth and rate of breathing(d) continue the approach and land regardless of the weather

44. Haemoglobin is:

(a) in the platelets(b) in the red blood cells(c) in the white blood cells(d) dissolved in the blood

45. Before donating blood it is recommended that a pilot should consult anAviation Medicine Specialist because blood donation may lead to:

(a) reduced tolerance to altitude(b) hypotension (reduced blood pressure(c) hypertension (increased blood pressure)(d) reduced body temperature which may cause fatigue

46. A small intake of alcohol will result in:

(a) the pilot being more susceptible to hypoxia(b) the brain functions being increased which will enhance performance

at high altitudes(c) the brain will be stimulated which will increase resistance to hypoxia(d) the pilot will remain unaffected

47. When flying in conditions of poor visibility due to mist, fog or snow pilots

may experience an illusion that:

(a) objects move faster than they really do(b) objects move slower than they really do(c) objects are closer than they really are(d) objects are further away than they really are



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48. Which of the following statements about humidity is/are correct ?

1. optimal levels are 40 - 60%2. cabin humidity is typically 5 - 15%3. humidity has no effect on the performance of the crew4. crew performance will be affected by dehydration

(a) 1 & 3 only(b) 1,2 & 4(c) 2 & 3 only(d) 2 & 4 only

49. Which of the following statements is most correct ?

(a) 40% of the information we process enters via the visual channel(b) 70% of the information we process enters via the visual channel(c) the 'kinestatic' channel offers the most important channel for

information when in the flying environment(d) the hearing channel is the most important for information we process

50. If the visual image is focussed in front of the retina the condition is knownas:

(a) hypermetropia(b) myopia(c) presbycusis(d) astigmatism



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Intentionally Blank



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Human Performance & Limitations

Exam 1 50 questions, time allowed 1 hour

A B C D

1

2

3

4

5

6

7

8

9

10

A B C D

11

12

13

14

15

16

17

18

19

20

Name:

21

22

23

24

25

26

27

28

29

30

A B C D

41

42

43

44

45

46

47

48

49

50

31

32

33

34

35

36

37

38

39

40



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ANSWERS

1. (b) 16. (c) 31. (a) 46. (a)2. (a) 17. (a) 32. (c) 47. (d)3. (b) 18. (b) 33. (a) 48. (b)4. (c) 19. (b) 34 (b) 49. (b)

5. (b) 20. (d) 35 (a) 50. (b)6. (c) 21. (a) 36. (d)7. (c) 22. (d) 37. (b)8. (c) 23. (a) 38. (a)9. (d) 24. (c) 39. (b)10. (d) 25. (b) 40. (b)11. (b) 26. (a) 41. (c)12. (a) 27. (a) 42. (a)13. (c) 28. (d) 43. (c)14. (a) 29. (d) 44. (b)15. (a) 30. (a) 45. (a)


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