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UPSC Civil Service Exam Questions - Engineering

Q1:

According to ICAO recommendations, what is the rate of elevation correction for the runway above MSL ?

A 1 % for every 100 m of elevation above MSL

B 7 % for every 300 m of elevation above MSL

C 2 % for every 500 m of elevation above MSL

D 2 % for every 300 m of elevation above MSL

ANS:B - 7 % for every 300 m of elevation above MSL

Elevation correction is actually done because the air pressure goes on decreasing as the elevation increase from the earth surface!