Vayudoot Aviation

1. How does a radio altimeter work?

Measures the Doppler shift of a pulse transmission

Measures the Doppler shift of a CW transmission

Measures the time from transmission to the reception of a CW frequency. Doppler shift - There has to be relative motion. Hence there is no Doppler shift in Radio Altimeter.

2. For the landing configuration a radio altimeter indicates?

Height of the flight deck above the ground

Height of the main wheel above the ground

Height of the aircraft above the ground

3. A RADALT provides?

Density altitude

Height above terrain

Pressure altitude

4. Low altitude radio altimeters operate on the _____ wavelength?

Centimetric

Metric

Decimetric

5. The failure of the radio altimeter would cause?

Loss of density altitude data

Loss of height data

Loss of pressure altitude data

6. If there is a fault in the system the radalt display will?

Freeze

Needle will disappear and an alarm flag will appear, possible accompanied by an audio warning

Turn red and activate an aural warning

7. A radio altimeter measures?

Height above the ground or water over which the aircraft is flying

True Altitude

Pressure Altitude

8. Radio altimeter gives height indications by

Measuring time diff. of a CW transmitted at fixed frequency

Measuring the Doppler frequency shift in transmitted frequency

Measuring time diff. of a CW transmitted at changing frequency

9. A radio altimeter is?

Aircraft based and indicates true height

Aircraft based and indicates pressure altitude

Aircraft based and indicates true altitude

10. Radio altimeters are accurate only within the height range?

Zero to 2500 ft

Zero to 50 ft

Zero to 500 ft

11. A radio altimeter has a maximum effective height because?

At greater heights the signal will be absorbed by moisture in the air

At greater heights from different modulation cycles will overlap

At greater heights the signal will be too weak

12. Radio altimeters are

Used to determine altitude above msl

Crucial to GPWS operations

Not required for GPWS operations

Question Bank

Questions for R* BL RADIO ALT

Question Bank

Questions for R* B*L* RADIO ALT

Questions for R* BL RADIO ALT