Additional Practice Questions: Human Factors (Part 1): DGCA Air Regulations questions

Question 1

The atmosphere contains the following gases:

Accepted Answer

78% nitrogen, 21% oxygen, 0.03% carbon dioxide, rest rare gases.

Answer

78% helium, 21% oxygen, 0.03% carbon dioxide, rest: rare gases.

Answer

78% nitrogen, 21% oxygen, 1% carbon monoxide, rest: rare gases.

Question 2

The volume percentage of oxygen in the atmosphere is 21% which:

Accepted Answer

Is constant for all altitudes conventional airplanes can reach.

Answer

Decreases with increasing altitude.

Answer

Increases with increasing altitude.

Question 3

Oxygen, combined with hemoglobin in blood is transported by:

Accepted Answer

Red blood cells.

Answer

Platelets.

Answer

White blood cells.

Question 4

One of the most dangerous symptoms of hypoxia concerning flight safety is:

Accepted Answer

Impaired judgment, disabling the pilot to recognize the symptoms.

Answer

Hyperventilation, causing emotional stress.

Answer

Reduced coordination of limb movements, causing the pilot to spin.

Question 5

One of the most frequent symptom(s) of decompression sickness emerging after a decompression in airline operation:

Accepted Answer

Are the bends.

Answer

Is a shock.

Answer

Are neurological damages to the CNS.

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