surveying civil-engineering question and answers -Page 34

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Surveying problems

4. If the declination of the needle is 10� W
Options
A. each of the whole circle reckoning has to be micros by 10�
B. in the quadrantal method, the correction is positive in the 1st and 3rd quadrants
C. in the quadrantal method, the corrections is negative in 2nd and 4th quadrants
D. all the above.

5. The back staff reading on a B.M. of R.L. 500.000 m is 2.685 m. If foresight reading on a point is 1.345 m, the reduced level of the point, is
Options
A. 502.685 m
B. 501.345 m
C. 501.340 m
D. 504.030 m
E. 502.585 m.

6. The conventional sign shown in below figure represents a
Options
A. bridge carrying railway below road
B. bridge carrying road below railway
C. bridge carrying road and railway at the same level
D. a level crossing.

7. For taking offsets with an optical square on the right hand side of the chain line, it is held
Options
A. by right hand upside down
B. by left hand upright
C. by right hand upright
D. by left hand up side down.

8. While setting a plane table at a station it was found that the error in centering was 30 cm away from the ray of length 40 m drawn from the station. If the scale of the plan is 1 cm = 2 cm, the displacement of the end of the ray in plan from the true position will be
Options
A. 0.02 cm
B. 0.15 cm
C. 02 cm
D. 0.1 cm

9. The angle of intersection of a curve is the angle between
Options
A. back tangent and forward tangent
B. prolongation of back tangent and forward tangent
C. forward tangent and long chord
D. back tangent and long chord.

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