Surveying and Levelling

51. Correction per chain length of 100 links along slope of α° is

1. 1.5α² /100
2. 1.5α /100
3. 1.5 α³/100
4. 1.5³

View answer

52. Correction per chainlength of 100 links along a slope of α radians, is

1. 100 α²
2. 100 α
3. 100 α³
4. 100 α^-1

View answer

53. Cross hairs in surveying telescopes, are fitted

1. In the objective glass
2. At the centre of the telescope
3. At the optical centre of the eye piece
4. In front of the eye piece

View answer

54. Cross-staff is used for

1. Setting out right angles
2. Measuring contour gradient
3. Taking levels
4. Measuring distances

View answer

55. Designation of a curve is made by:

1. Angle subtended by a chord of any length
2. Angle subtended by an arc of specified length
3. Radius of the curve
4. Curvature of the curve

View answer

56. Detailed plotting is generally done by

1. Radiation
2. Traversing
3. Resection
4. All of the above

View answer

57. Determining the difference in elevation between two points on the surface of the earth, is known as

1. Levelling
2. Simple levelling
3. Differential levelling
4. Longitudinal levelling

View answer

58. Deviation of the actual road gradient from the proposed contour gradient uphill side, involves

1. Embankment on the centre line
2. Excavation on the centre line
3. Earth work on the centre line
4. None of these

View answer

59. Diaphragm of a surveying telescope is held inside

1. Eye-piece
2. Objective
3. Telescope tube at its mid point
4. Telescope at the end nearer the eye-piece

View answer

60. Different grades are joined together by a

1. Compound curve
2. Transition curve
3. Reverse curve
4. Vertical curve

View answer