ISRO Recruitment - Airport Engineering 1000+ MCQ [Solved] PDF Download

1. For the proposed air port, the survey project provides
A. Master plan
B. Topographic plan
C. Grading plan
D. All the above
Answer : D

2. The capacity of parallel runway pattern depends upon
A. Weather conditions and navigational aids available
B. Lateral spacing between two runways and weather conditions
C. Lateral spacing between two runways and navigational aids available
D. Lateral spacing between two runways, weather conditions and navigational aids available.
Answer : D

3. Pick up the correct statement from the following:
A. The basic length of a runway is increased at a rate of 7% per 300 m of elevation of M.S.L.
B. The standard temperature at the site is obtained by reducing the standard sea level temperature of 15°C at the rate of 6.5°C per 1000 m rise in elevation
C. The aerodrome reference temperature is the monthly mean of the mean daily temperature for the hottest month of the year
D. All the above
Answer : D

4. The total length of a runway is 1000 m. The elevation at distance 0,200 m, 400 m, 600 m, 800 m and 1000 m are 100.0 m, 99.2 m, 101.0 m, 101.8 m, 101.4 m and 101.0 m respectively. The effective gradient of runway will be.
A. 0.10 %
B. 0.26 %
C. 0.43 %
D. 0.65 %
Answer : B

5. The landing and takeoff of the air craft is made against the direction of wind. In no case the centre line of the runway should make an angle with the wind direction exceeding
A. 10°
B. 20°
C. 30°
D. 40°
Answer : C

6. The distance between main gears is 10 m, and the distance of nose gear from centre of main gears is 30 m. If the angle of turning is 60°, the distance of centre of rotation from the nearer main gear, is
A. 12.30 m
B. 11.30 m
C. 10.30 m
D. 9.30 m
Answer : A

7. In instrument landing system
A. L.O.M. and L.M.M. are installed on one side and Localizer antenna on the other side
B. L.O.M. and Localizer are installed on one side and L.M.M. on the other side
C. Localizer and L.M.M. are installed on one side and L.O.M. on the other side
D. None of these
Answer : A

8. The reduced levels of the ends A and B of a runway are 3025 m and 3035 m and that of its mid-point is 3015 m. The reduced level of the horizontal surface, is
A. 3070 m
B. 3060 m
C. 3075 m
D. 3015 m
Answer : C

9. According to I.C.A.O. all markings on the runways are painted white and on taxiways
A. Black
B. Red
C. Yellow
D. Green
Answer : C

10. According to I.C.A.O. the slope of transitional surface at right angles to the centre line of runway, is kept
A. 1 in 4
B. 1 in 5
C. 1 in 6
D. 1 in 7
Answer : D

11. Speed of
A. Sound at 0°C is 1190 kmph
B. Sound varies 2.4 kmph per degree centigrade rise in temperature
C. Sound at 0°C is called one Mach
D. All the above
Answer : D

12. Total correction for elevation, temperature and gradient for a runway should not be more than
A. 15 %
B. 20 %
C. 25 %
D. 35 %
Answer : D

13. The main disadvantage of angle nose out parking configuration of aircraft is that the
A. Aircraft rear loading door is far away from terminal building.
B. Hot blast is directed towards the terminal building
C. Overall apron area required is more
D. All the above
Answer : B

14. If lift off distance of an craft is 2000 m, the clear way at the end of the runway should not be less than
A. 145 m
B. 152.5 m
C. 162.5 m
D. 172.5 m
Answer : D

15. The slope of the obstruction clearance line from the boundary of the heliport should be
A. 1 : 2
B. 1 : 5
C. 1 : 8
D. 1 : 40
Answer : C

16. Pick up the incorrect statement from the following:
A. L.O.M. is installed at 7.2 km from the threshold
B. L.M.M. is installed at 1.0 km from the threshold
C. Localizer antenna is installed at 300 m from the other end of the runway
D. Glide slope antenna is installed at the centre of the runway about 150 m on one side
Answer : D

17. The depressions and undulations in the pavement, are caused due to
A. Improper compaction of sub-grade
B. Impact of heavy wheel loads
C. Punching effect
D. All the above
Answer : D

18. An aircraft is flying in an atmosphere of 30°C with a speed of 1260 km ph. Its speed is known as
A. Subsonic
B. Sonic
C. Super-sonic
D. Mach
Answer : B

19. Pick up the correct statement from the following:
A. Approximate geometric centre of the landing area, is called air port reference point
B. The boundaries of horizontal surface and conical surface are marked with reference to air port reference point
C. The location of the air port on a map is the position of air port reference point
D. All the above
Answer : D

20. The length of clear zone for none instrument runway of a small aircraft is
A. 150 m
B. 300 m
C. 600 m
D. 750 m
Answer : B

21. Which of the following is an example of failure in flexible pavements?
A. Alligator cracking
B. Mud pumping
C. Warping cracks
D. Shrinkage cracks
Answer : A

22. If the monthly mean of average daily temperature for the hottest month of the year is 25°C and the monthly mean of the maximum daily temperature of the same month of the year is 46°C, the airport reference temperature is
A. 32°C
B. 35.5°C
C. 48°C
D. 25°C
Answer : C

23. Pick up the correct statement from the following:
A. Air screw converts the energy given by the engine into speed
B. The propellers which are driven by turbine engines, are technically called turboprops
C. The aircrafts which obtain the thrust directly from turbine engine, are called turbo-jets
D. All the above
Answer : D

24. As per ICAO recommendation, the rate of change of longitudinal gradient per 30 m length of vertical curve for A and B type of airports is limited to a maximum of
A. 0.1 %
B. 0.2 %
C. 0.3 %
D. 0.4 %
Answer : A

25. If the width of the approach area near the runway end is 150 m, the width of the approach area at a distance of 3 kilometres from runway end will be
A. 1500 m
B. 1200 m
C. 1000 m
D. 800 m
Answer : B

26. The threshold markings are
A. 4 m wide
B. 1 m clear space between adjacent
C. Placed symmetrically on either side of the runway centre line
D. All the above
Answer : D

27. In an airport, if 4 groups of 5 gates each located well separated are considered for traffic and the future to present traffic ratio is 3, then the total requirement of future gates will be
A. 32
B. 36
C. 44
D. 68
Answer : B

28. Pick up the correct statement from the following:
A. Approach zone survey is carried out to determine the elevations of the protruding obstructions above horizontal, conical and transitional surfaces
B. The wind data of an air port is depicted in the form of a chart known as wind rose
C. The landing and takeoff of the air craft is made against the wind direction
D. All the above
Answer : D

29. The air is blowing at a speed of 75 knots in the direction of the aircraft flying at a ground speed of 775 knots. The air speed of the aircraft, is
A. 775 knots
B. 75 knots
C. 850 knots
D. 675 knots
Answer : D

30. Pick up the incorrect statement from the following:
A. Channelization of pavement is caused by constant use of tri-cycle gears of aircraft
B. Blast pads are used over cohesionless soils to resist erosion due to tremendous speed of the jet blast
C. Over-run areas of at least 300 m length on either side of the runway are provided
D. None of these
Answer : D

31. The maximum value of the angle of turning of the nose gear large jet aircrafts, is limited to
A. 20°
B. 30°
C. 45°
D. 60°
Answer : D

32. Which of the following factors are taken into account for estimating the runway length required for aircraft landing?
1. Normal maximum temperature
2. Airport elevation
3. Maximum landing weight
4. Effective runway gradient Select the correct answer using the codes given below Codes:
A. 1, 2, 3 and 4
B. 1, 3 and 4
C. 2 and 3
D. 1, 2 and 4
Answer : D

33. The size of landing area for multi engine helicopters operating under 1 FR conditions is
A. 22.5 m × 22.5 m
B. 30 m × 30 m
C. 22.5 m × 30 m
D. 60 m × 120 m
Answer : D

34. Calm period is the percentage of time during which wind intensity is less than
A. 4.8 kmph
B. 6.4 kmph
C. 8.0 kmph
D. 9.6 kmph
Answer : B

35. Pick up the component not applicable to aeroplanes
A. Wings
B. Engines
C. Air screw
D. None of these
Answer : D

36. The runway orientation is made so that landing and takeoff are
A. Against the wind direction
B. Along the wind direction
C. Perpendicular to wind direction
D. None of these
Answer : A

37. The bearing of the longest line of a wind rose is S 45° E, the bearing of the runway will be numbered
A. 135°
B. 31
C. 13
D. Both (c) and (d)
Answer : D

38. The length of a runway under standard atmospheric conditions is 1800 m. If the actual reduced level of the site is 1200 m, the design length of the runway is
A. 2360 m
B. 2460 m
C. 2560 m
D. 2660 m
Answer : C

39. According to the International Civil Aviation Organisation (I.C.A.O.) the strength of runway pavements, have been coded by
A. Seven English alphabets
B. Last Seven English alphabets
C. First Seven English alphabets
D. First seven numbers
Answer : D

40. Zero fuel weight of an aircraft is:
A. Equal to empty operating weight
B. Equal to maximum landing weight
C. Less than empty operating weight
D. Equal to sum of empty operating weight and the maximum pay load
Answer : D

41. According to the International Civil Aviation Organisation (I.C.A.O.), the runway lengths of aerodromes, have been coded by
A. Seven English alphabets
B. Last Seven English alphabets
C. First Seven English alphabets
D. First seven natural numbers
Answer : C

42. For Class A Air port the difference of reduced levels of higher and lower edges of the conical surface, is
A. 25 m
B. 50 m
C. 75 m
D. 100 m
Answer : D

43. The lift off distance is the distance along the centre of the runway between the starting point and
A. End of the runway
B. End of stop-way
C. Point where air craft becomes air borne
D. Point where air craft attains a height of 10.7 m
Answer : A

44. The runway length after correcting for elevation and temperature is 2845 m. If the effective gradient on runway is 0.5 percent then the revised runway length will be
A. 2845 m
B. 2910 m
C. 3030 m
D. 3130 m
Answer : C

45. International Civil Aviation Organisation (I.C.A.O.) was set up at Montreal (Canada), in
A. 1929
B. 1939
C. 1947
D. 1950
Answer : C

46. For the proposed runway stated in if the aerodrome reference temperature is 17°.2, the net designed length of the runway is
A. 2716 m
B. 2816 m
C. 2916 m
D. 3016 m
Answer : B

47. The centre to centre spacing of heliport lighting along the periphery of landing and takeoff area should be
A. 2.5 m
B. 5.0 m
C. 7.5 m
D. 10.0 m
Answer : C

48. Pick up the correct statement from the following:
A. Landing speed is directly proportional to the wing loading
B. Wing loading remaining constant, the take off distance is directly proportional to the powder loading
C. Neither (a) nor (b)
D. Both (a) and (b)
Answer : D

49. As per ICAO, for A, B, and C type of airports, maximum effective, transverse and longitudinal grades in percentage respectively are
A. 1.0, 1.5 and 1.5
B. 1.0, 1.5 and 2.0
C. 1.5, 1.5 and 2.0
D. 2.0, 2.0 and 2.0
Answer : A

50. The width and interval of transverse centre line bars along the extended centre line of runway, in approach lighting system are
A. 3 m and 30 m
B. 4.2 m and 30 m
C. 4.2 m and 50 m
D. 3 m and 45 m
Answer : B