21. Total correction for elevation, temperature and gradient for a runway should not exceed
- 25%
- 35%
- 15%
- 20%
22. At a certain station, the mean of the average temperature is 30°C and mean of the maximum daily temperature is 45°C. What is the airport reference temperature?
- 35°C
- 25°C
- 45°C
- None of the above
23. The boundary of the landing and takeoff area of heliports are illuminated by
- Amber light
- Green light
- White light
- Blue light
24. At an airport, the turning radius of taxiway is given by ___________. (V is in km/h and f is coefficient of friction)
- V2/128f
- V2/125f
- V2/126f
- V2/127f
25. At an airport, the basic runway length is corrected for
- Moisture content, temperature, and effective gradient
- Elevation, temperature, and moisture content
- Elevation, temperature, and effective gradient
- Temperature and friction
26. Runway threshold is indicated by series of parallel lines starting from a distance of
- 3 m from runway end
- 6 m from runway end
- 1 m from runway end
- 15 m from runway end
27. Airport elevation is the reduced level above Mean Sea level of
- control tower
- highest point of the landing area
- lowest point of the landing area
- none of these
28. Beaufort Scale is used to determine
- Strength of winds
- Direction of winds
- Height of aircrafts
- None of these
29. Wind rose diagram is used for the purpose of deciding
- runway orientation
- runway capacity
- runway cross-section
- location of taxiways
30. The basic runway length should be increased at the rate of X percent per Y m rise in elevation above mean sea level, where
- X= 7; Y = 300
- X= 6, Y = 200
- X= 6; Y = 300
- X= 7; Y = 200