Surveying Online Test – Paper 3

1. The direction of the steepest slope on a contour is

2. *The leveling of the instrument is done such that

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

4. Butt rods are used for measuring

5. An imaginary line lying through the surface of the ground, having a constant inclination to the horizontal, is known as

6. In a closed traverse, the algebraic sum of deflection angles is

7. Metallic tapes are made of

8. Staff intercept means

9. Normal tension is that pull which

10. In plane table instrument for horizontal & vertical measurement without chaining

11. *The two-peg method is used to check the parallelism between the

12. 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

13. "Cross-sectioning" and "Longitudinal sectioning" is

14. In normal condition, the difference of fore and back bearing should be?

15. In a closed traverse,

16. The angular error of closure or summation error should not exceed (Where N is the number of stations or sides.)

17. The chain length which is not the standard metric chain length is

18. Positive error is caused if

19. The bearing of the traverse line is calculated by

20. *The method of leveling used to carry out the reconnaissance of an area is

21. The method of offset laying involving minimum measurement on the ground is

22. For Y level, Cooke's, and Cushing levels, the line of collimation should coincide with

23. Chainage is the distance measured

24. "Fiducial edge" is the working edge of

25. *For the construction of highway/railway

26. The levelling head of a transit theodolite consists of

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

28. A 30 m long chain when tested should not show errors exceeding

29. In a closed traverse, the closing error should not be more than (where N is the no. of sides of the traverse)

30. The curvature and refraction corrections applied to staff readings respectively are

31. The most probable value of an observed quantity available from a given set of observations is the one for which the sum of the square of errors is a minimum. This statement is called

32. Direction of the closing error is given by

33. A series of straight, parallel, and widely spaced contours on a map represent a

34. For the route survey of a contour map, the method used is

35. If the magnetic declination is (-)6°0' and the reduced bearing of a line is S40°01'E, the true bearing of the line is

36. Ranging is the process of

37. The last reading of leveling is always at

38. The central angle subtended by an arc of 30m of the curve

39. A series of closely spaced contour lines represent a

40. The line normal to the plumb line is known as

41. The surface perpendicular to the direction of gravity is

42. In a constant level tube, the size of the bubble remains constant because the upper wall of the tube has

43. Bowditch's rule is applied to

44. *Error due to imperfect adjustment of plate level is termed as

45. The angle subtended by the long chord of a simple curve at its center is equal to

46. The distance between terminal points computed from a subsidiary traverse run between them is known as

47. Right face and left face readings are taken to

48. The RL of the benchmark is 1000.0 m, and the back sight reading at the benchmark is 2.555 m. Find the staff reading of IS if the RL of IS is 1000.055 m

49. A building is an obstacle to

50. Sensitivity of a level tube is expressed by