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- Question
Probable accidental error in precise levelling as recommended by International Geodetic Association, should not exceed
(where k is in kilometers.)
Options- A. ± 0.1 k mm
- B. ± 0.5 k mm
- C. ± 1 k mm
- D. ± 2 k mm
- E. ± 5 k mm.
- Correct Answer
- ± 1 k mm
- 1. In tangential tacheometry, an ordinary level staff is used
Options- A. leaning towards the instrument for inclined sights upward
- B. leaning away from the instrument for inclined sights downwards
- C. vertical in all cases
- D. none of these. Discuss
- 2. Horizontal distances obtained tacheometerically are corrected for
Options- A. slope correction
- B. temperature correction
- C. refraction and curvature correction
- D. all the above. Discuss
- 3. The staff intercept will be
Options- A. greater farther off the staff is held
- B. smaller, farther off the staff is held
- C. smaller, nearer the staff is held
- D. same, wherever the staff is held. Discuss
- 4. Ranging is an operation of
Options- A. reconnaissance
- B. judging the distance
- C. determination of slope
- D. establishing intermediate points between terminals. Discuss
- 5. If the length of a chain line along a slope of ?° is l, the required slope correction is
Options- A. 2l cos2 ?/2
- B. 2l sin2 ?/2
- C. l tan2 ?/2
- D. l cos2 ?/2. Discuss
- 6. If the length of a transition curve to be introduced between a straight and a circular curve of radius 500 m is 90 m, the maximum perpendicular offset for the transition curve, is
Options- A. 0.70 m
- B. 1.70 m
- C. 2.70 m
- D. 3.70 m
- E. 4.70 m Discuss
- 7. Pick up the correct statement from the following :
Options- A. the framework which consists of a series of connected lines, the lengths and directions of which are found from measurements, is called a traverse.
- B. the system of a series of lines which forms a circuit which ends at the starting point, is called a closed traverse
- C. the traverse that starts from a point already fixed in some survey system and ends on another such point, is called a controlled traverse
- D. the traverse that is not controlled is called a fly traverse
- E. all the above. Discuss
- 8. Pick up the correct statement from the following :
Options- A. a refracting telescope consists optically of two lenses
- B. the principal axes of both the lenses coincide the optical axis of the telescope
- C. the lens nearer the object to be viewed is convex and is called objective
- D. the lens nearer the eye is called eyepiece
- E. all the above. Discuss
- 9. Pick up the correct statement from the following :
Options- A. spherical aberration may be reduced by diminishing the aperture
- B. spherical aberration may be minimised by replacing the single lens by a combination of the lenses.
- C. in telescope objectives, a combination of convex lens and concave lens is used.
- D. in eyepieces, two plano-convex lenses placed at a certain distance apart are used
- E. all the above. Discuss
- 10. The imaginary line passing through the intersection of cross hairs and the optical centre of the objective, is known as
Options- A. line of sight
- B. line of collimation
- C. axis of the telescope
- D. none of these. Discuss
Surveying problems
Search Results
Correct Answer: vertical in all cases
Correct Answer: refraction and curvature correction
Correct Answer: smaller, farther off the staff is held
Correct Answer: establishing intermediate points between terminals.
Correct Answer: 2l sin2 ?/2
Correct Answer: 2.70 m
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: line of collimation
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