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1 ï»¿A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads

A The directions of plumb lines suspended at different points in a survey are not strictly parallel B In surveys of small extent, the effect of curvature may be ignored and the level surface of the earth is assumed as horizontal C In surveys of large extent, the effect of curvature of the earth must be considered D All the above.

✅ Correct Answer: 4

2 In geodetic surveys higher accuracy is achieved, if

A curvature of the earth surface is ignored B curvature of the earth surface is taken into account C angles between the curved lines are treated as plane angles D none of these.

✅ Correct Answer: 2

3 In geodetic surveys higher accuracy is achieved, if

A curvature of the earth surface is ignored B curvature of the earth surface is taken into account C angles between the curved lines are treated as plane angles D none of these.

✅ Correct Answer: 2

4 Determining the difference in elevation between two points on the surface of the earth, is known as

A levelling B simple levelling C differential levelling D longitudinal levelling.

✅ Correct Answer: 3

5 Contours of different elevations may cross each other only in the case of

A an over hanging cliff B a vertical cliff C a saddle D an inclined plane.

✅ Correct Answer: 1

6 Permanent adjustments of a level are

A 2 in number B 3 in number C 4 in number D 6 in number

✅ Correct Answer: 1

7 The radius of a simple circular curve is 300 m and length of its specified chord is 30 m. The degree of the curve is

A 5.73Â° B 5.37Â° C 3.57Â° D 3.75Â°.

✅ Correct Answer: 1

8 During levelling if back sight is more than foresight

A The forward staff is at lower point B The back staff is at lower point C The difference in level, cannot be ascertained. D none of these.

✅ Correct Answer: 2

9 Two contour lines, having the same elevation

A cannot cross each other B can cross each other C cannot unite together D can unite together.

✅ Correct Answer: 4

10 The surface of zero elevation around the earth, which is slightly irregular and curved, is known as

A mean sea level B geoid surface C level surface D horizontal surface.

✅ Correct Answer: 2

11 The representation of general topography of a very flat terrain is possible only

A by drawing contours at large interval B by drawing contours at small interval C by giving spot levels at large interval D by giving spot levels to salient features at close interval.

✅ Correct Answer: 4

12 The bearing of line AB is 152Â° 30' and angle ABC measured clockwise is 124Â° 28'. The bearing of BC is

A 27Â° 52' B 96Â° 58' C 148Â° 08' D 186Â° 58'

✅ Correct Answer: 2

13 A transit is oriented by setting its vernier A to read the back azimuth of the preceding line. A back sight on the preceding transit station taken and transit is rotated about its vertical axis. The vernier A reads

A azimuth of the forward line B bearing of the. forward line C back bearing of the forward line D equal to 360Â°-azimuth of the forward line.

✅ Correct Answer: 1

14 Correction per chain length of 100 links along a slope of Î± radians, is

A 100 Î±2 B 100 Î± C 100 Î±3 D 100 Î±-1.

✅ Correct Answer: 2

15 While working on a plane table, the correct rule is :

A Draw continuous lines from all instrument stations B Draw short rays sufficient to contain the points sought C Intersection should be obtained by actually drawing second rays D Take maximum number of sights as possible from each station to distant objects.

✅ Correct Answer: 2

16 Pick up the correct statement from the following

A the contour lines having the same elevation cannot unite and continue as one line B a contour can not end abruptly, but must ultimately close itself not necessarily within the limits of map. C the direction of steepest slope at a point on a contour is at right angles to the contour D all the above.

✅ Correct Answer: 4

17 In case of a double line river, contours are

A stopped at the banks of the river B stopped at the edge of the river C drawn across the water D drawn by parabolic curves having their vertex at the centre of the water.

✅ Correct Answer: 2

18 In case of a direct vernier scale

A graduations increase in opposite direction in which graduations of the main scale increase B smallest division is longer than smallest division of the main scale C graduations increase in the same direction in which graduations of the main scale increase D none of these.

✅ Correct Answer: 3

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Civil Engineering MCQS-Surveying Section 8