For true difference in elevations between two points A and B, the level must be

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Question
For true difference in elevations between two points A and B, the level must be set up
Options
A. at any point between A and B
B. at the exact mid point of A and B
C. near the point A
D. near the point B.

Correct Answer

at the exact mid point of A and B

Surveying problems

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3. If h is the difference in level between end points separated by l, then the slope correction is . The second term may be neglected if the value of h in a 20 m distance is less than
Options
A. m
B. 1 m
C. 2 m
D. 3 m

4. The most reliable method of plotting a theodolite traverse, is
Options
A. by consecutive co-ordinates of each station
B. by independent co-ordinates of each station
C. by plotting included angles and scaling off each traverse leg
D. by the tangent method of plotting.

5. Pick up the method of surveying in which field observations and plotting proceed simultaneously from the following
Options
A. chain surveying
B. compass surveying
C. plan table surveying
D. tacheometric surveying.

6. Pick up the correct statement from the following:
Options
A. the theodolite in which telescope can be rotated in vertical plane is called a transmit
B. when the vertical circle is to the left of the telescope during observation, it is called to be in left face
C. when the vertical circle is to the right of the telescope during observation, it is called to be in right face
D. all the above.

8. For a closed traverse the omitted measurements may be calculated
Options
A. length of one side only
B. bearing of one side only
C. both length and bearing of one side
D. length or bearing of adjacent side
E. all the above.

9. Pick up the correct statement from the following :
Options
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.

10. The sensitiveness of a level tube decreases if
Options
A. radius of curvature of its inner surface is increased
B. diameter of the tube is increased
C. length of the vapour bubble is increased
D. both viscosity and surface tension are increased.

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