# Civil Engineering - Advanced Surveying

### Exercise :: Advanced Surveying - Section 3

31.

The negative sign is assigned to

 A. reduction to mean sea level B. correction for horizontal alignment C. correction for slope D. correction for slope E. all the above.

Explanation:

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32.

Pick up the correct statement from the following :

 A. The star's movement is apparent due to the actual steady rotation of the earth about its axis B. The stars move round in circular concentrated parts C. The centre of the circular paths of stars is the celestial pole D. The axis of rotation is a fixed direction of a particular diameter of the celestial sphere either end of which is a pole E. All the above.

Explanation:

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33.

The method of surveying by triangula-tion was first introduced by the Dutchman Snell in

 A. 1600 B. 1615 C. 1630 D. 1650 E. 1680

Explanation:

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34.

Right ascension of a heavenly body is its equatorial angular distance measured

 A. westward from the first point of Libra B. eastward from the first point of Aeries C. westward from the first point of Aeries D. eastward from the first point of Libra.

Explanation:

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35.

Pick up the incorrect statement from the following. In a spherical triangle

 A. every angle is less than two right angles B. sum of the three angles is equal to two right angles C. sum of the three angles less than six right angles and greater than two right angles D. if the sum of any two sides is π, the sum of the angles opposite them is also π E. sum of any two sides is greater than the third.