Altimeter: DGCA Air Navigation questions

Question 1

A servo altimeter has a quoted accuracy of 1 hPa at mean sea level. The accuracy in the standard atmosphere is:

Accepted Answer

+- 27 ft at MSL and +- 50 ft at 10 000 ft

Answer

+- 50 ft at 10 000 ft and +- 100 ft at 40 000 ft

Answer

+- 50 ft at 20 000 ft and +- 90 ft at the tropopause

Question 2

Position error is caused due to.

Accepted Answer

All of the above

Answer

Ground effect

Answer

Configuration of A/C

Question 3

Pressure error is maximum at:

Accepted Answer

As in and under ground effect

Answer

High speed and high altitude

Answer

Low level and high speed

Question 4

A servo altimeter is __________ than a conventional one because of __________:

Accepted Answer

More accurate, electrical pick off coils.

Answer

More accurate, electrical servos

Answer

Less accurate, electrical servos

Question 5

What will happen if an a/c has 2 altimeters, one of which is compensated for position error, whilst the other is not:

Accepted Answer

One will over read at high air speed

Answer

One will under read at high air speed

Answer

One will under read close to the ground.

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