Surveying Online Test – Paper 3

1. Natural error in leveling is caused due to

2. An invert is taken when the point is

3. Chainage is the distance measured

4. Isogonic lines are

5. The Normal chord of a curve should be

6. The two-point problem and three-point problems are methods of:

7. Tilting levels are used for

8. The stadia hairs are not used in

9. The inclination of the needle to the horizontal towards the pole is called

10. If the magnetic bearing of the sun at noon at a place in the southern hemisphere is 150°, the magnetic declination at that place is

11. The important points selected at the ends of the chain lines to command the boundaries of the survey are known as

12. The minimum horizontal distance between any two consecutive contours is known as

13. In a traverse, the algebraic sum of the deflection angles, taking the right-hand deflection angles as positive and left-hand deflection as negative, should be equal to

14. Local attraction at a place may be due to

15. The included angles of the theodolite traverse are generally measured

16. Prolongation of a chain line across an obstruction in chain surveying is done by

17. If the smallest division of a vernier is longer than the smallest division of its primary scale, the vernier is known as

18. Level surface is parallel to

19. The magnification of a telescope lens depends upon

20. The rise and fall method of leveling provides a complete check on

21. The elevation (BM) of point A is 100 m. Backsight reading at A is 20, and foresight reading at B is 30 m. Find the RL of point B

22. The reciprocal leveling eliminates

23. Which one of the following may not be classified as a natural error?

24. Staff intercept means

25. The spacing of crosshairs in a stadia diaphragm of a tacheometer is 1.5mm, and the focal length of the objective glass is 30cm, the multiplying constant of the tacheometer is

26. Right face and left face readings are taken to

27. The maximum allowable limit up to which a measurement may vary from the true value is known as

28. In a survey, it was recorded that Σrise = 0, then

29. If Θ is the angle of the slope, L is the length of the slope, and H is the difference in elevation between the two ends of the link, then the slope correction will be

30. *Total station is

31. Different grades are joined together by a

32. A series of closed contour lines on the map with higher to lower values inside them represent a

33. Size of a theodolite is specified by

34. Find the length of curve if the radius of the curve is 50 m, and the angle of deflection is 60°

35. The foremost work to be executed while traversing with a compass is

36. The intercept of a staff is

37. The contour lines are perpendicular to the

38. The effect of local attraction is observed in

39. Secular variation is an important factor because

40. In a double-line river, contours are

41. The method of plane tabling generally adopted to obtain details and plotting inaccessible points is:

42. The types of instrument generally used in the survey of gravity water supply system are:

43. The main difference between an optical square and a prism square is

44. Resection is the method employed for:

45. To orient a plane table without two inaccessible points, the method generally adopted is:

46. *The instrument used to measure horizontal and vertical angle is

47. The projection of a line on a plane parallel to the meridian is known as

48. The telescope is said to be normal when the

49. An internal focusing type of telescope is focused by the movement of

50. The order of accuracy of the elevation of points obtained from a contour map is equal to