An a/c is fitted with 2 altimeters.One is corrected for position error,the other is not corrected for position error.
a.Provided that ADC is working normally,there will be no error to either altimeter
b.at high speed the non-compensated altimeter will show lower altitude
c.at high speed the non-compensated altimeter will show higher altitude
position error comes into picture during any of the following events:
a) during side slip
b) during ground effect
c) low speeds
d) when aircraft is in a certain attitude.
its got nothing to do with high speed.
i guess the question means non-compensated for compressibility error, which comes into play during high speeds.
the answer should be b according to me.