# Civil Engineering - Advanced Surveying

### Exercise :: Advanced Surveying - Section 2

1.

In field astronomy, the quantities observed are entirely

 A. lengths B. angles C. heights D. all of these.

Explanation:

No answer description available for this question. Let us discuss.

2.

The orthogonal projection of the perspective centre on a tilted photograph, is called

 A. nadir B. isocentre C. principal point D. plumb point.

Explanation:

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3.

The principal plane contains

 A. nadir point B. iso centre C. principal point D. principal axis and principal line E. all the above..

Explanation:

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4.

The point where vertical line passing through the perspective centre intersects the plane of the photograph, is known as

 A. photo plumb point B. plumb point C. nadir point D. isocentre E. none of these.

Explanation:

No answer description available for this question. Let us discuss.

5.

Pick up the correct statement from the following :

 A. Aerial photographs may be either vertical or oblique B. Vertical photographs are taken with the axis of camera pointing vertically downward C. Vertical photographs are used for most accurate maps D. On oblique photographs, scale variation is larger as compared to that of vertical photographs E. all the above.