Surveying Online Test – Paper 3

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

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

3. Which one of the following is not a personal error?

4. An offset more than 15m in length is known as

5. The limiting length of an offset does not depend upon

6. 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

7. A traverse survey can be plotted

8. Dumpy level is used when

9. If the observed reading of a level staff is 3.83m, and at the point sighted the staff is 0.15m off from the vertical through the bottom, the correct reading will be

10. The fundamental lines of transit of the theodolite are

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

12. The amount of correction due to local attraction at a place

13. Handles of chains are made of

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

15. Short offsets are measured with

16. The instrument used for centering the plane table accurately is:

17. The angle that can be set by a French cross-staff is

18. If the image formed by the objective of the telescope is not in the plane of crosshairs, it is called

19. The optical square is based on the principle of

20. Overturning of vehicles on a curve can be avoided by using

21. Bowditch's rule is applied to

22. In the case of a telescopic alidade, the adjustment done is

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

24. The types of errors that are of a cumulative nature and can be corrected are known as

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

26. If S is the value of one smallest division on the main scale, v is the value of one smallest division on the vernier, and n is the number of divisions on the vernier, then the least count is given by

27. Secular variation is an important factor because

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

29. A negative declination shows the magnetic meridian to the

30. The magnification of a telescope lens depends upon

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

32. 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

33. The instrument used for measuring area on a contour map is

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

35. Area of triangle joining three corner points in comparison to the circle same three points:

36. Natural error in leveling is caused due to

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

38. Find the length of curve if radius of curve

39. 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

40. The smaller angle which a survey line makes with the true meridian is known as

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

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

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

44. A chain is made up of mild steel or galvanized iron wire of diameter

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

46. The longitudinal section of the surface of the bubble tube is

47. If the quadrantal bearing of a line is N 35° W, then the whole circle bearing is

48. For the construction of a highway railway

49. The main difference between theodolite and level is:

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