Surveying Online Test – Paper 3

1. The purpose of triangulation in a chain survey is

2. The place where the reading is taken is known as

3. The contour lines merge or cross one another on the map in the case of

4. When the whole circle bearing of two lines AB and AC are 115° and 41° respectively, then the included angle BAC will be:

5. The two-point problem as compared to the three-point problem is:

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

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

8. The "point of tangency" of a simple circular curve is

9. The angle of intersection of the horizon mirror and the index mirror of an optical square is

10. 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

11. 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

12. The type of survey in which horizontal and vertical distance is measured

13. The tacheometric method is a more suitable method for preparing the contour map of

14. In a closed traverse by included angles, the sum of measured interior angles should be equal to

15. If the needle of the compass is sluggish the type of error will be

16. For accurate work, in comparison to the chain, the steel band is used because it

17. The types of survey in which fieldwork and plotting proceed simultaneously are:

18. In survey works, declination varies from time to time and place to place. The main important variation is

19. The effect of local attraction is observed in

20. When several contours coincide, it indicates

21. The magnetic declination at a place is 7°20' W, the bearing given by the compass is S45°40'E, the true bearing of the place is

22. In the stadia method, if k is the multiplying factor, s is the staff intercept, c is the additive constant of the instrument, then the distance equation is given by the expression

23. Tacheometry is best suited

24. 'SPIRE TEST' is used in the permanent adjustment of theodolite for

25. Plane table survey is considered good as compared to other surveys since:

26. The levels to which the earthwork will have to be carried out is known as

27. Dumpy level is used when

28. *Due to the curvature of the earth, objects look

29. Working edge of alidade is called

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

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

32. The quadrantal bearing of a line is determined by:

33. During leveling staff readings are taken 1.0, 0.8 & 0.6 from consecutive horizontal crosshairs, the staff intercept should be

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

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

36. Contour lines

37. The number of horizontal cross wires in a stadia diaphragm is

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

39. In a closed traverse,

40. The sensitivity of the bubble tube expressed in terms of the angular value of one division of the bubble is given by

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

42. The process of turning the telescope about the horizontal axis in a vertical plane by a complete revolution is known as

43. If the needle is truly magnetic and is not sluggish

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

45. A bearing noted N45° E represents

46. If the temperature increases, the sensitivity of a bubble tube

47. Natural error in leveling is caused due to

48. If the distance between two points A and B is 1km, the combined correction for curvature and refraction will be

49. For a tacheometer, the additive and multiplying constants are respectively

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