Which of the following is used to sense aircraft magnetic fields?

A)
Gyroscope
B)
Accelerometer
C)
Magnetic compass
D)
Airborne magnetometer

Correct Answer :   Airborne magnetometer

Explanation : Aircraft have magnetic fields that add to the Earth’s field and are sensed by the airborne magnetometers. The induced error, called deviation, can be 10° or more.

Recently Updated in Avionics Questions
The error that occurs due to the rotation of Earth as well as the aircraft’s own motion is called as ______
A)
Asymmetrical error
B)
Precession rate error
C)
Rate compensation error
D)
Standoff constant error

Correct Answer : Option (D) :   Standoff constant error

Explanation : A stand off constant error exists since the direction of the local vertical changes as a result of both the rotation of the Earth and the aircraft’s own motion around the Earth.

What can be done to reduce to avoid poor acceleration error averaging?
A)
Use higher order leveling loop
B)
Use switch gravity sensors
C)
Use differential leveling loop
D)
Use lowest order leveling loop

Correct Answer : Option (A) :   Use higher order leveling loop

Explanation : The stand off error depends upon the gravity sensors switch’s dead and gives poor acceleration errors. Significant improvement can be obtained in the averaging vertical reference by using a high order leveling loop.

Which of the following is not a unit of the magnetic field?
A)
Maxwell
B)
Tesla
C)
Gauss
D)
Gamma

Correct Answer : Option (A) :   Maxwell

Explanation : The magnetic fields B are measured in Gauss and Tesla(104 Gauss). In geomagnetism, Units of “Gamma”(10-5 )are used.

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