ILS/MLS Coupled Landing System and Automatic Landing – 2 MCQ’s

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This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “ILS/MLS Coupled Landing System and Automatic Landing – 2″.

1. The guidance sensitivity decreases as the range decreases
a) True
b) False

2. When does an ILS localizer coupling loop become unstable?
a) Aircraft range is infinity
b) Aircraft range is close to zero
c) When too many aircraft are present
d) When no aircraft is present

3. What is the beam error in localizer for aircraft CG displacement of 5m at a range of 1,500m?
a) 0.0033 RAD
b) 3.3 RAD
c) 0 RAD
d) 5 RAD

4. What is missing in the localizer coupling loop?
a) Flight computer
b) ILS Localizer receiver
c) ILS glide path receiver
d) ILS Localizer transmitter

5. Which of the following is not one of the operational limits and autopilot requirement for a category IIIc visibility condition?
a) Runway guidance required to taxi point
b) Fully automatic landing system with flare
c) Probability of catastrophic failure of less than 10−7 per hour required
d) Decision height of 5m

6. Why is flare maneuver executed during landing phase?
a) To align with the runway
b) To reduce airspeed and rate of descent
c) To stabilize the aircraft during crosswinds
d) To conserve fuel

7. Which one of the following is not a basic parameter used to define visibility category?
a) Decision height
b) Minimum vertical visibility
c) Runway length
d) Runway visual range

8. How is altitude measured when the aircraft is about to land?
a) Pitot static port
b) Pitot stagnation port
c) Radio altimeters
d) Inertial navigation systems

9. Why is the kick off drift maneuver executed?
a) To align with the runway
b) To reduce airspeed and rate of descent
c) To stabilize the aircraft during crosswinds
d) To conserve fuel

10. The final approach path in a satellite landing guidance can be curved
a) True
b) False

11. The response of a jet engine thrust to the throttle angle is instantaneous.
a) True
b) False

12. What is HREF in the control law used for auto flare?
a) Height when flare is initiated
b) Height where flare should be initiated
c) Maximum height where flare can be initiated
d) Small negative height

13. What controls the efficient functioning of an engine?
a) Autopilot
b) FMS
c) FBW
d) FADEC

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