Civil Engineering - Advanced Surveying

Exercise :: Advanced Surveying - Section 4

26. 

The declination and right ascension of the sun becomes 23° 27' S and 270° respectively on

A. March 21
B. June 21
C. September 21
D. December 22.

Answer: Option D

Explanation:

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27. 

The product of the distances of plumb point and horizon point of a vertical photograph from its principal point, is

A. f2
B. 2f2
C. 3f2
D. f
E. f

Answer: Option A

Explanation:

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28. 

The principal line is the line joining the principal point and

A. nadir
B. isocentre
C. perspective centre
D. none of these.

Answer: Option B

Explanation:

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29. 

Longitudes are measured from 0° to

A. 180° eastward
B. 180° westward
C. 180° east or westward
D. 360° eastward
E. 360° westward.

Answer: Option C

Explanation:

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30. 

If the distance between the projectors is altered by a movement along X-axis of one projector,

A. the length of the air base is increased
B. the scale of the model is altered
C. y-parallax is not affected
D. relative orientation is not affected
E. all the above.

Answer: Option E

Explanation:

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