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Civil Engineering Objective Questions { Air Port Engineering }



22. 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.
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23. Airport elevation is the reduced level above M.S.L. of
A. control tower
B. highest point of the landing area
C. lowest point of the landing area
D. none of these.
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24. From the end of an instrumental runway, the approach surface rises outwards
A. 1 in 20
B. 1 in 30
C. 1 in 40
D. 1 in 50.
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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.
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26.  Conical surface of the approach area rises outwards
A. 1 in 10
B. 1 in 15
C. 1 in 20
D. 1 in 25.
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27.  Pick up the correct statement from the following :
A. The centre line of the approach area coincides with that of the runway
B. Approach areas are measured in horizontal surfaces
C. The imaginary inclined plane which is directly above the approach area is called approach surface
D. All the above.
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28. The strength of winds is measured with the help of
A. Benfort scale
B. Wind indicator
C. Barometres
D. None of these.
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