Why is the radio altimeter placed in the tail of aircraft?

A)
Weight balance
B)
Can be placed anywhere
C)
When landing tail is closer to the ground
D)
When landing nose is closer to the ground

Correct Answer :   When landing tail is closer to the ground

Explanation : When an aircraft lands it has to do the flare maneuver where the pilot pitches the aircraft’s nose up to slow down the plane. Radio altimeter measures precise distance from the ground and since the tail is closer to the ground than the nose, to measure the minimum distance it is placed in the tail.

Recently Updated in Avionics Questions
Anti reflection coated optics reduce ________
A)
Refraction
B)
Reflection angle
C)
Intensity of star image
D)
Optical transmission losses

Correct Answer : Option (D) :   Optical transmission losses

Explanation : For anti-reflection coated optics, the optical transmission losses may be 1% or 2% at each air to glass or glass to air optical control surface within the telescope, including windows or sensor covers or surfaces. For uncoated optics, the loss per surface is about 4% to 5%.

The ratio of the focal length to aperture is called the ________
A)
Focal number
B)
f/ number
C)
Critical aperture
D)
Effective aperture

Correct Answer : Option (B) :   f/ number

Explanation : The ratio of focal length to aperture is called the f/ number. For example, an f/10 telescope may have a 30 in. focal length and a 3 in. aperture.

The physical size of the star depends upon _____
A)
Shape of image
B)
Colour of image
C)
Angular size of image
D)
Intensity of image

Correct Answer : Option (C) :   Angular size of image

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