Refraction correction________________?

Related Mcqs:

1. As applied to staff readings, the corrections for curvature and refraction are respectively The above table shows a part of a level field book. The value of X should be________________?

   A. 98.70
   B. 100.00
   C. 102.30
   D. 103.30

2. Which of the following methods of offsets involves less measurement on the ground?

   A. method of perpendicular offsets
   B. method of oblique offsets
   C. method of ties
   D. all involve equal measurement on the ground

3. The permissible error in chaining for measurement with chain on rough or hilly ground is_____________?

   A. 1 in 100
   B. 1 in 250
   C. 1 in 500
   D. 1 in 1000

4. The horizontal angle between the true meridian and magnetic meridian at a place is called______________?

   A. azimuth
   B. declination
   C. local attraction
   D. magnetic bearing

5. If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated____________?

   A. on its outer spindle with a relative motion between the vernier and graduated scale of lower plate
   B. on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate
   C. on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate
   D. on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate

6. In an internal focussing type of telescope, the lens provided is_______________?

   A. concave
   B. convex
   C. plano-convex
   D. plano-concave

7. The difference between a level line and a horizontal line is that_______________?

   A. level line is a curved line while hori-zontal line is a straight line
   B. level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line
   C. horizontal line is normal to plumb line while level line may not be normal to the plumb line
   D. both are same

8. A series of closely spaced contour lines represents a___________________?

   A. steep slope
   B. gentle slope
   C. uniform slope
   D. plane surface

9. Detailed plotting is generally done by________________?

   A. radiation
   B. traversing
   C. resection
   D. all of the above

10. Transit rule of adjusting the consecutive coordinates of a traverse is used where________________?

    A. linear and angular measurements of the traverse are of equal accuracy
    B. angular measurements are more accurate than linear measurements
    C. linear measurements are more accurate than angular measurements
    D. all of the above