Surveying Online Test – Paper 3

1. Contour lines of different elevations can unite to form one line only in the case of

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

3. The benchmark of a station A is 500 m, and the back sight reading at the point A is 2 m & foresight reading of station B is 3 m. Find the RL of station B

4. The method of leveling in which the plane table is set at only one station to take detail is known as:

5. If W is the weight of the chain, L is the span, and P is the tension or pull, the sag correction for the chain will be

6. Offsets are

7. Fifteen readings were recorded in a level field book. If the instrument was shifted after the 5th, 10th, and 15th readings, then the foresight readings are

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

9. The errors due to bad ranging are

10. If the formation level is less than the ground level, the difference between them at any point will give the

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

12. 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

13. An instrumental error in compass survey is because

14. In trigonometrical leveling, the combined correction is given by (where m=coefficient of refraction)

15. The survey which is carried out to determine absolute locations and the direction of any line on the surface of the earth by making observations of heavenly bodies is called

16. Permanent adjustment is carried out to

17. Actually, which is not the method of plane tabling?

18. An anallatic lens is a.... used to remove an additive constant in a tacheometer.

19. A traverse consists of six sides; then the sum of external angles must be

20. The outer spindle attached to the lower plate in a transit theodolite is known as

21. Which one of the following may not be classified as personal error

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

23. Theodolite is an instrument used for measuring

24. Local attraction in compass surveying may be due to

25. Sensitivity of a level tube is expressed by

26. A building is an obstacle to

27. A relatively fixed point of known elevation above the datum is called

28. Normal tension is that pull which

29. Magnetic declination

30. The best method of interpolation of contours in the direct method of contouring is by

31. It is more difficult to obtain good results while measuring the horizontal distance by the stepping method

32. *For the construction of highway/railway

33. The whole circle bearing 338°42" converted into quadrantal form is given as

34. Offset angle taken in chain survey may be

35. *Which instrument is not used in plane table

36. Subtense bar is an instrument used for the measurement of horizontal distance in

37. Intersection is preferred to radiation when:

38. A discrepancy is the difference between

39. Crosshairs in a surveying telescope are fitted

40. The principle of surveying to prevent the accumulation of errors is

41. The contour line can cross one another on a map only in the case of

42. In an internal focusing type of telescope, the negative lens provided is

43. A poor fix of the table is:

44. The tie line is run through the survey to

45. Chain surveying is used for a small area in

46. Chainage is the distance measured

47. Isogonic lines are

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

49. A bearing noted N45° E represents

50. In profile leveling, staff readings on two neighboring pegs 20m apart are 1.200 and 1.00, respectively. Therefore, the proposed road has a