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### Civil Engineering :: Surveying

1.  Hydrographic surveys deal with the mapping of
2. A.

large water bodies

B.

heavenly bodies

C.
 mountaineous region
D.

canal system

E.

movement of clouds.

3. If h is the difference in level between end points separated by l, then the slope correction is $$\frac { h^2 } { 2I }$$+$$\frac { h^4 } { 8 }$$The second term may be neglected if the value of h in a 20 m distance is less than

4.  A. $$\frac { 1 } { 2 }$$    m B. 1 m C. 2 m D. 3 m

5. An ideal vertical curve to join two gradients, is

6.  A. circular B. parabolic C. elliptical D. hyperbolic E. none of these.

7.  Pick up the correct statement from the following
8. A.

the eyepiece plays no part in defining the line of sight

B.

the diaphragm plays no part in defining the line of sight

C.

the optical centre of the objective plays no part in defining the line of sight

D.
 none of these.

9.  The intercept of a staff
10.  A. is maximum if the staff is held truly normal to the line of sight. B. is minimum if the staff is held truly normal to the line of sight. C. decreases if the staff is tilted away from normal D. increases if the staff is tilted towards normal.

11. The radius of curvature of the arc of the bubble tube is generally kept

12. A.

10 m

B.

25 m

C.
 50 m
D.

100 m

13. If S is the length of a subchord and R is the radius of simple curve, the angle of deflection between its tangent and sub-chord, in minutes, is equal to

14.  A. 573 S/R B. 573 R/S C. 171.9 S/R D. 1718.9 R/S E. 1718.9 S/R.

15. The real image of an object formed by the objective, must lie

16.  A. in the plane of cross hairs B. at the centre of the telescope C. at the optical centre of the eye-piece D. anywhere inside the telescope.

17. In chain surveying tie lines are primarily provided

18.  A. to check the accuracy of the survey B. to take offsets for detail survey C. to avoid long offsets from chain lines D. to increase the number of chain lines.

19.  Pick up the correct statement from the following :
20.  A. the tangent screw enables to give small movement under conditions of smooth and positive control B. standing on the tripod is the levelling head or trib arch C. the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical D. all the above.