Civil Engineering - Advanced Surveying

Exercise :: Advanced Surveying - Section 3

41. 

Sidereal day

A. is the period of time taken by the earth in making a complete rotation with reference to stars
B. is slightly shorter than an ordinary solar day
C. is divided into the conventional hours, minutes and seconds
D. all the above.

Answer: Option D

Explanation:

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42. 

Pick up the correct statement for horizontal photographs.

A. Parallel lines do not appear parallel in central projection
B. The two sides of a road meet at the vanishing point
C. The lines parallel to the negative plane are projected as parallel lines
D. All the above.

Answer: Option D

Explanation:

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43. 

If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is

A. 30°
B. 35°
C. 40°
D. 45°.

Answer: Option C

Explanation:

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44. 

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.

Answer: Option B

Explanation:

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45. 

In a truly vertical photograph,

A. principal point coincides the isocentre
B. iso-centre coincides the plumb point
C. plumb point coincides the principal point
D. principal point, iso-centre and plumb point coincide
E. all the above.

Answer: Option E

Explanation:

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