Which of the following is false with respect to MEMS gyro? - Avionics MCQ

Aeronautical & Aerospace Engineering : Avionics - Quiz(MCQ)

Which of the following is false with respect to MEMS gyro?

A)

Low cost

B)

Low failure rate

C)

High maintenance

D)

Less power consumption

Correct Answer : High maintenance

Explanation : Micro machined vibrating mass rate gyros exploit semiconductor manufacturing technology for mass production. They are extremely reliable and rugged devices with low power consumption and offer the major advantage of relatively low cost. They also do not require the very high maintenance that spinning rotor gyros require.

Recently Updated in Avionics Questions

Why is the gyro and accelerometers shock mounted to the body?

A)

Reduce drift error

B)

Impact protection

C)

Limit vibration errors

D)

Prevent voltage surges

Correct Answer : Option (C) : Limit vibration errors

Explanation : The gyros and accelerometers are rigidly mounted on a block with temperature sensors. The block is usually shock mounted to the vehicle to control the bandwidth of the motion sensed at the instruments. Shock mounting limits vibration rectification errors within the errors themselves.

Pre-processing algorithms are also called as ________

A)

Resolution algorithm

B)

Coning algorithm

C)

Differential algorithm

D)

Error control algorithm

Correct Answer : Option (B) : Coning algorithm

Explanation : Pre-processing the gyro data at a higher rate than the quaternion iteration improves the approximation in the vector change in angle in order to follow the actual motion of the rotation axis closely. The pre-processing algorithm is also called as coning algorithms.

Which of the following is false with respect to gimballed platform?

A)

Protect the instruments from large angular motion

B)

Euler angles are not easily readable from the gimbals

C)

Protection from vibration, temperature and magnetic effects

D)

Orients the accelerometers into a coordinate frame relative to Earth

Correct Answer : Option (B) : Euler angles are not easily readable from the gimbals

Explanation : One of the main purposes of gimballed system is to provide a convenient readout of vehicle attitude by reading each of the gimbals angles separately, thereby yielding convenient Euler angle outputs.

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