Q1. A “Landing Compass”
Correct answer is – Is used to establish aircraft magnetic heading during a compass swing
Q2. A direct reading compass should be swung when:
Correct answer is – there is a large, and permanent, change in magnetic latitude
Q3. A flux valve senses the changes in orientation of the horizontal component of the earth’s magnetic field: 1 – the flux valve is made of a pair of soft iron bars 2 – the primary coils are fed AC voltage 3 – the information can be used by a “flux gate” compass or a directional gyro 4 – the flux gate valve casing is dependent on the aircraft three inertial axis 5 – the accuracy of the value of the magnetic field indication is less than 0.5% The combination of correct statements is:
Correct answer is – 2, 3 and 5
Q4. A gyro-magnetic compass or magnetic heading reference unit is an assembly which always consists of: 1 – a directional gyro 2 – a vertical axis gyro 3 – an earth’s magnetic field detector 4 – an azimuth control 5 – a synchronizing control The combination of correct statements is:
Correct answer is – 1, 3 and 5
Q5. A slaved directional gyro derives it’s directional signal from?
Correct answer is – The flux valve.
Q6. A slaved directional gyro derives its directional signal from:
Correct answer is – the flux valve
Q7. Coefficient A is corrected for
Correct answer is – Moving the compass housing around its vertical axis
Q8. Deviations in a remote indicating compass are?
Compensated for electronically or mechanically.
Q9. Error detector generates an error signal which goes to amplifier for amplification and Amplifier gives _________
Correct answer is – DC output
Q10. From what does a gyro magnetic compass torque motor obtain its information?
Correct answer is – Amplifier
Q11. In a remote indicating compass system the amount of deviation caused by aircraft magnetism and electrical circuits may be minimised by:
Correct answer is – mounting the detector unit in the wingtip
Q12. In a remote indicating compass system, the flux detector element is pendulously mounted to:
Ensure the detector remains horizontal.
Q13. In a Remote Indicating Compass, the “Slaving” signal is generated by the:
Error Detector.
Q14. In a remote indicating magnetic compass the flux valve?
Correct answer is – Uses an AC power supply.
Q15. In a typical remote reading compass, the gyro is kept aligned with the magnetic meridian by means of
Correct answer is – A torque motor
Q16. The annunciator of a remote indicating compass system is used when:
Correct answer is – synchronising the magnetic and gyro compass elements
Q17. The characteristics of the directional gyro used in a gyro-stabilized compass system are?
Correct answer is – Two degrees of freedom, whose horizontal axis corresponding to the reference direction is maintained in the horizontal plane by an automatic erecting system.
Q18. The direct reading magnetic compass is made aperiodic (dead beat) by:
Correct answer is – keeping the magnetic assembly mass close to the compass point and by using damping wires
Q19. The directive force acting on a compass needle in an aircraft
Correct answer is – Is the resultant magnetic force in the horizontal plane in the position where the compass is installed
Q20. The flux valve of a remote indicating compass is pendulously mounted to:
Keep the detector horizontal.
Q21. The gyro-magnetic compass torque motor:
Correct answer is – causes the directional gyro unit to precess
Q22. The gyro-magnetic compass torque motor?
Correct answer is – Causes the directional gyro unit to precess.
Q23. The heading information originating from the gyro-magnetic compass flux valve is sent to the:
Correct answer is – error detector
Q24. The heading information originating from the gyro-magnetic compass flux valve is sent to the?
Correct answer is – Error detector.
Q25. The heading reference unit of a three-axis data generator is equipped with a gyro with?
Correct answer is – 2 degrees of freedom and horizontal spin axis.
Q26. The input signal of the amplifier of the gyro-magnetic compass resetting device originates from the:
Correct answer is – error detector
Q27. The input signal of the amplifier of the gyro-magnetic compass resetting device originates from the?
Correct answer is – Error detector.
Q28. The main advantage of a remote indicating compass over a direct reading compass is that it:
Correct answer is – senses, rather than seeks, the magnetic meridian
Q29. The main reason for mounting the detector unit of a remote reading compass in the wingtip of an aeroplane is:
Correct answer is – to minimise the amount of deviation caused by aircraft magnetism and electrical circuits
Q30. The main reason for usually mounting the detector unit of a remote indicating compass in the wingtip of an aeroplane is to:
Correct answer is – reduce the amount of deviation caused by aircraft magnetism and electrical circuits
Q31. The measurement of the magnetic heading in a Remote Indicating Compass relies on the use of a:
Flux Valve.
Q32. The output of a flux valve is initially:
An AC voltage that varies with heading.
Q33. The output of the flux valve is fed to the?
Correct answer is – Error detector.
Q34. The purpose of compass check swing is to:
Correct answer is – measure the angle between Magnetic North and Compass North
Q35. The purpose of the torque motor in a gyro stabilised magnetic compass is to?
Correct answer is – Precess the directional gyro.
Q36. The purpose of the torque motor in a gyro stabilized magnetic compass is
Correct answer is – Precesses the directional gyro.
Q37. The torque motor of a gyro-stabilized magnetic compass:
Precesses the directional gyro.
Q38. To what does the flux valve of a gyro magnetic compass transmit information?
Correct answer is – Error detector.
Q39. What is the strength of the H component of the earth’s magnetic field (in micro tesla ) at the North pole?
Correct answer is – 0
Q40. Which component of the aircraft’s magnetic field is sensed by the flux valve?
Horizontal.
Q41. Which of the following is an occasion for carrying out a compass swing on a Direct Reading Compass?
Correct answer is – After an aircraft has passed through a severe electrical storm, or has been struck by lightning
Q42. Which one of the following is an advantage of a remote reading compass as compared with a standby compass?
Correct answer is – It senses the magnetic meridian instead of seeking it, increasing compass sensitivity