Which of the following does not provide a proper reason for not using HMD in civil aircraft? - Avionics MCQ

Aeronautical & Aerospace Engineering : Avionics - Quiz(MCQ)

Which of the following does not provide a proper reason for not using HMD in civil aircraft?

A)

No need of helmets in civil aircraft

B)

Situational awareness is needed in civil aircraft

C)

Acoustic noise level in civil aircrafts is much lower

D)

An oxygen mask is required only in the case of cabin depressurization

Correct Answer : Situational awareness is needed in civil aircraft

Explanation : For a civil aircraft the situational awareness is not essential as they are inherently safer and do not execute high g maneuvers. Also, situational awareness is an important factor only when the flight parameters are rapidly changing, for a civil aircraft which is in steady level flight for most of its flight time situational awareness is not necessary.

Recently Updated in Avionics Questions

Only the pilot of a particular aircraft can use its DVI control system?

A)

True

B)

False

C)

Can Not Say

D)

None of the above

Correct Answer : Option (B) : False

Explanation : The DVI control system is a universal system which can recognize the voice of anyone if spoken clearly. This is done for maintenance purposes and for an emergency.

The DVI control system need not be super sensitive to the voice of the pilot.

A)

True

B)

False

C)

Can Not Say

D)

None of the above

Correct Answer : Option (B) : False

Explanation : The DVI control system must be super sensitive to the voice of the pilot so that it can be operated in cockpit noise environment. In a fast jet combat aircraft, the background noise levels can be very high.

What are isolated word recognizers?

A)

System that is not fully voice commanded

B)

Systems that can recognize anyone’s voice

C)

Systems that require a pause between each word to recognize

D)

Systems that only accept one-word command

Correct Answer : Option (C) : Systems that require a pause between each word to recognize

Explanation : An isolated word recognizer requires pauses between each word said as it cannot recognize fully connected speech. The DVI control in an aircraft must not be an isolated voice recognizer to ensure smooth man-machine interface.

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