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Correct Answer : Keeping the head in the upright position
Explanation : Keeping the head always in an upright position is not an option for pilots since the pilot will lose situational awareness if he does so. The pilot will feel the inertial forces irrespective of his head position. By reducing the moment of inertia we can reduce the inertial torques experienced. Reducing weight and positioning the CG of the helmet with the pivoting point of head ensures that there are minimal out of balance moments.
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.
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.
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.
