Civil Engineering - Surveying

16. 

Correction per chain length of 100 links along a slope of α radians, is

A. 100 α2
B. 100 α
C. 100 α3
D. 100 α-1.

Answer: Option B

Explanation:

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17. 

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.

Answer: Option B

Explanation:

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18. 

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.

Answer: Option D

Explanation:

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19. 

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.

Answer: Option B

Explanation:

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20. 

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.

Answer: Option C

Explanation:

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