811. Diurnal variation of magnetic declination is
A. greater at equator than nearer the poles
B. less at equator than nearer the poles
C. less in summer than in winter
D. same at all latitudes and during different months.
812. Which of the following is an example of failure in flexible pavements ?
A. Alligator cracking
B. Mud pumping
C. Warping cracks
D. Shrinkage cracks
813. Assertion A : Airport capacity during IFR conditions is usually less than that during VFR conditions. Reason R: During clear weather condition (VFR), the aircrafts on final approach to runway can be spaced closer during poor visibility conditions?
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true
814. Which of the following is used for servicing and repairs of the aircraft ?
A. Apron
B. Hanger
C. Terminal building
D. holding apron
815. Polaris is usually observed for the determination of the azimuth when it is
A. at culmination
B. at elongation
C. neither at culmination nor at elongation
D. either at culmination or at elongation.
816. Pick up the incorrect statement from the following. High oblique photographs
A. may have tilt up to 30?
B. may include the image of the horizon
C. may not include the image of the horizon
D. none of these.
817. The point where a vertical line through the optical centre of the camera lens intersects the ground, is known as
A. ground principal point
B. ground plumb point
C. iso-centre
D. perspective centre.
818. The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as
A. isocentre
B. principal point
C. perspective centre
D. plumb line.
819. The point on the photograph where bisector between the vertical line through optical centre of the camera lens and the plate perpendicular meets, is known as
A. principal point
B. isocentre
C. plumb point
D. perspective centre.
820. Homologous point is
A. photo principal point
B. ground principal point
C. ground isocentre
D. all the above.
NOTE
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