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- Question
Pick up the correct statement from the following :
Options- A. in the earth's magnetic field, a magnetic needle rests in magnetic meridian
- B. the angle between the true meridian and the magnetic meridian is called magnetic variation
- C. one end of the magnetic needle supported at its centre of gravity tends to dip down towards the. nearer magnetic pole of the earth
- D. the magnet properly pivoted is balanced by means of riding weight movable along the needle
- E. all the above.
- Correct Answer
- all the above.
- 1. The true meridian of a place is the line in which earth's surface is intersected by a plane through
Options- A. east and west points
- B. zenith and nadir points
- C. north and south geographical poles
- D. north and south magnetic poles. Discuss
- 2. The bubble tube is nearly filled with
Options- A. alcohol or chloroform
- B. a liquid which is very mobile
- C. a liquid having low freezing point
- D. all the above. Discuss
- 3. The direction of steepest slope on a contour, is
Options- A. along the contour
- B. at an angle of 45° to the contour
- C. at right angles to the contour
- D. none of these. Discuss
- 4. Prismatic compass is considered more accurate than a surveyor's compass, because
Options- A. it is provided with a better magnetic needle
- B. it is provided with a sliding glass in the object vane
- C. its graduations are in whole circle bearings
- D. it is provided with a prism to facilitate reading of its graduated circle
- E. both (c) and (d). Discuss
- 5. The ratio of the angles subtended at the eye, by the virtual image and the object, is known as telescope's
Options- A. resolving power
- B. brightness
- C. field of view
- D. magnification. Discuss
- 6. Diurnal variation of magnetic declination is
Options- A. greater at equator than nearer the poles
- B. less at equator than nearer the poles
- C. less in summer than in winter
- D. same at all latitudes and during different months. Discuss
- 7. For orientation of a plane table with three points A, B and C, Bessel's drill is
Options- A. Align b through a and draw a ray towards c, align a through b and draw a ray towards c, finally align c through the point of intersection of the previously drawn rays
- B. Align c through a and draw a ray towards b, align a through c and draw a ray towards b, finally align b through the point of intersection of the previously drawn rays
- C. Align c through b and draw a ray towards a, align b through c and draw a ray towards a, finally align a, through the point of intersection of the previously, drawn rays
- D. In the first two steps any two of the points may be used and a ray drawn towards the third point, which is sighted through the point of intersection of previously drawn rays in the final step. Discuss
- 8. Pick up the correct statement from the following :
Options- A. the lines of sight while observing back sight and fore sight lie in the same horizontal plane
- B. the staff readings are measurements made vertically downwards from a horizontal plane
- C. the horizontal plane with reference to which staff readings are taken, coincides with the level surface through the telescope axis
- D. all the above. Discuss
- 9. The distance between steps for measuring down hill to obtain better accuracy
Options- A. decreases with decrease of slope
- B. increases with increase of slope
- C. decreases with increase of slope
- D. decreases with decrease of weight of the chain. Discuss
- 10. The minimum range for sliding the focusing lens in the internal focusing telescope for focusing at all distances beyond 4 m is
Options- A. 5 mm
- B. 10 mm
- C. 15 mm
- D. 20 mm. Discuss
Surveying problems
Search Results
Correct Answer: north and south geographical poles
Correct Answer: all the above.
Correct Answer: at right angles to the contour
Correct Answer: it is provided with a prism to facilitate reading of its graduated circle
Correct Answer: magnification.
Correct Answer: less at equator than nearer the poles
Correct Answer: In the first two steps any two of the points may be used and a ray drawn towards the third point, which is sighted through the point of intersection of previously drawn rays in the final step.
Correct Answer: all the above.
Correct Answer: decreases with increase of slope
Correct Answer: 20 mm.
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