MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following factors affect the ability of a stable element to remain non-rotating relative to space? |
| A. | Drift rate of the reference gyro |
| B. | Accuracy of gyro torquer |
| C. | Linear motion of the vehicle |
| D. | Orthogonality of the components on the platform |
| Answer» D. Orthogonality of the components on the platform | |
| 2. |
When does a gimbal lock occur on a three axis platform? |
| A. | Inner gimbal approaches 90° |
| B. | Inner gimbal approaches 0° |
| C. | Outer gimbal approaches 90° |
| D. | Middle gimbal approaches 90° |
| Answer» E. | |
| 3. |
Which of the following is false with respect to gimballed platform? |
| A. | Orients the accelerometers into a coordinate frame relative to Earth |
| B. | Euler angles are not easily readable from the gimbals |
| C. | Protect the instruments from large angular motion |
| D. | Protection from vibration, temperature and magnetic effects. |
| Answer» C. Protect the instruments from large angular motion | |
| 4. |
Sculling errors occur when rotation and acceleration are combined. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
WHICH_OF_THE_FOLLOWING_IS_FALSE_WITH_RESPECT_TO_GIMBALLED_PLATFORM??$ |
| A. | Orients the accelerometers into a coordinate frame relative to Earth |
| B. | Euler angles are not easily readable from the gimbals |
| C. | Protect the instruments from large angular motion |
| D. | Protection from vibration, temperature and magnetic effects. |
| Answer» C. Protect the instruments from large angular motion | |
| 6. |
SCULLING_ERRORS_OCCUR_WHEN_ROTATION_AND_ACCELERATION_ARE_COMBINED.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which of the following factors affect the ability of a stable element to remain non-rotating relative to space?$ |
| A. | Drift rate of the reference gyro |
| B. | Accuracy of gyro torquer |
| C. | Linear motion of the vehicle |
| D. | Orthogonality of the components on the platform |
| Answer» D. Orthogonality of the components on the platform | |
| 8. |
When does a gimbal lock occur on a three axis platform?$ |
| A. | Inner gimbal approaches 90° |
| B. | Inner gimbal approaches 0° |
| C. | Outer gimbal approaches 90° |
| D. | Middle gimbal approaches 90° |
| Answer» E. | |
| 9. |
In any order of gimbal, the innermost gimbal has unlimited freedom. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Why is the gyro and accelerometers shock mounted to the body? |
| A. | Impact protection |
| B. | Reduce drift error |
| C. | Prevent voltage surges |
| D. | Limit vibration errors |
| Answer» E. | |
| 11. |
Pre-processing algorithms are also called as _________ |
| A. | Coning algorithm |
| B. | Error control algorithm |
| C. | Differential algorithm |
| D. | Resolution algorithm |
| Answer» B. Error control algorithm | |
| 12. |
What type of error occurs if the axis of rotation is moving in space? |
| A. | Linearization errors |
| B. | Control error |
| C. | Coning error |
| D. | Differential error |
| Answer» D. Differential error | |
| 13. |
What does the quaternion integration algorithm use to control error? |
| A. | Linearization constraint |
| B. | Normalization constraint |
| C. | Differential constraint |
| D. | Integral constraints |
| Answer» C. Differential constraint | |
| 14. |
Which of the following is a four element entity consisting of a scalar and a vector and is used to describe strapdown system rotation? |
| A. | Directional cosines |
| B. | Directional sines |
| C. | Quaternion |
| D. | Triternion |
| Answer» D. Triternion | |
| 15. |
Which one of the following is not a purpose of strapdown calculations? |
| A. | Calculate vehicle’s attitude |
| B. | Transform accelerometer measurements into navigational coordinates |
| C. | Perform dead-reckoning computations |
| D. | Provide inputs to air data computer |
| Answer» E. | |
| 16. |
What the gyro act as in a strapdown system? |
| A. | Angular rate sensors |
| B. | Null sensors |
| C. | Angle indicators |
| D. | Orientation indicators |
| Answer» B. Null sensors | |
| 17. |
In which type of inertial navigation system are the gyro and accelerometer rigidly mounted to the body? |
| A. | Gimballed system |
| B. | Fixed system |
| C. | Strapdown system |
| D. | Void system |
| Answer» D. Void system | |