Civil Engineering - Advanced Surveying

Exercise :: Advanced Surveying - Section 1

26. 

At western elongation, the pole star moves

A. eastward
B. westward
C. northward
D. southward.

Answer: Option D

Explanation:

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27. 

Pick up the correct statement from the following :

A. Refraction correction is zero when the celestial body is in the zenith
B. Refraction correction is 33' when the celestial body is on the horizon
C. Refraction correction of celestial bodies depends upon their altitudes
D. all the above.

Answer: Option D

Explanation:

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28. 

The hour angle of the heavenly body for Greenwich meridian equals the hour angle of the body for any other meridian + longitude :

A. mean sun
B. true sun
C. vernal equinox
D. star
E. all the above.

Answer: Option E

Explanation:

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29. 

By raising the z-column of right projector, maximum y-parallax is introduced in the model at

A. position 1
B. position 2
C. position 4
D. position 6
E. position 4 and 6.

Answer: Option E

Explanation:

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30. 

The height displacement on a vertical photograph

A. increases as the horizontal distance increases from the principal point
B. increases as the ground elevation increases
C. decreases as the flying height increases
D. all the above.

Answer: Option D

Explanation:

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