Where will the measurements of static pressure be most accurate?

Trailing cone

Tail of the aircraft

Nose of the aircraft

Wing tips of the aircraft

Correct Answer : Trailing cone

Explanation : The most accurate value of static pressure is when the flow is least affected by the presence of the aircraft itself. In a trailing cone configuration, the probe is far behind the aircraft and is least affected by the flow.

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The error that occurs due to the rotation of Earth as well as the aircraft�s own motion is called as ______

Asymmetrical error

Precession rate error

Rate compensation error

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?

Use higher order leveling loop

Use switch gravity sensors

Use differential leveling loop

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?

Maxwell

Tesla

Gauss

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.