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Civil Engineering Objective Questions { Air Port Engineering }

50.  Pick up the correct statement from the following :
A. The distance between the points of intersection of the extreme tangents to the transition curve is kept greater than 7500 m x sum of grade changes at the point of intersection
B. The rate of change of grade is limited to 0.3% per 30 m length of the curve
C. According to I.C.A.O. the maximum longitudinal gradient along a runway is limited to 1.5%
D. All the above,
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51. A gradient of + 0.08% is followed by a gradient of ? 0.07%. If the permissible rate of change of grade is 0.003 per 30 metres, the length of the transition curve, is
A. 150 m
B., 140 m
C. 160 m
D. 175 m.
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52. The height of the pilot's eye above the runway surface is assumed
A. 1 m
B. 3 m
C. 4 m
D. 5 m.
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53.  For the taxiways, the following statement is true
A. The maximum longitudinal grade is 3%
B. The permissible rate of change of grade is 1%
C. The permissible transverse grade is 1.5%
D. All the above.
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54. The runway orientation is made so that landing and take off are
A. against the wind direction
B. along the wind direction
C. perpendicular to wind direction
D. none of these,
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55.  Two single runways may be arranged so as to have
A. L-shape
B. T-shape
C. X-shape
D. All the above.
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56. The bearing of the runway at threshold is 290?, the runway number is
A. N 70? W
C. 29?
D. W 20? N.
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