Vayudoot Aviation

1. Radio altimeter gives height indications by

Measuring time diff. of a CW transmitted at fixed frequency

Measuring time diff. of a CW transmitted at changing frequency

Measuring the Doppler frequency shift in transmitted frequency

2. 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.

3. A RADALT provides?

Pressure altitude

Height above terrain

Density altitude

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

Metric

Centimetric

Decimetric

5. A radio altimeter measures?

Pressure Altitude

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

True Altitude

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

Zero to 50 ft

Zero to 2500 ft

Zero to 500 ft

7. For the landing configuration a radio altimeter indicates?

Height of the main wheel above the ground

Height of the aircraft above the ground

Height of the flight deck above the ground

8. The failure of the radio altimeter would cause?

Loss of height data

Loss of pressure altitude data

Loss of density altitude data

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

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

Turn red and activate an aural warning

Freeze

10. 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

11. A radio altimeter is?

Aircraft based and indicates true altitude

Aircraft based and indicates pressure altitude

Aircraft based and indicates true height

12. Radio altimeters are

Crucial to GPWS operations

Used to determine altitude above msl

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