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- Question
Offsets are measured with an accuracy of 1 in 40. If the point on the paper from both sources of error (due to angular and measurement errors) is not to exceed 0.05 cm on a scale of 1 cm = 20 m, the maximum length of offset should be limited to
Options- A. 14.14
- B. 28.28 m
- C. 200 m
- D. none of these.
- Correct Answer
- 28.28 m
- 1. True meridians are generally preferred to magnetic meridians because
Options- A. these converge to a point
- B. these change due to change in time
- C. these remain constant.
- D. None of these. Discuss
- 2. If f1 and f2 are the distances from the optical centre of a convex lens of focal length f to conjugate two points P1 and P2 respectively, the following relationship holds good
Options- A. f = f1 + f2
- B. f =
(f1 + f2) - C.
- D. none of these. Discuss
- 3. The limiting length of an offset does not depend upon
Options- A. accuracy of the work
- B. method of setting out perpendiculars
- C. scale of plotting
- D. indefinite features to be surveyed. Discuss
- 4. The sensitiveness of a level tube decreases if
Options- A. radius of curvature of its inner surface is increased
- B. diameter of the tube is increased
- C. length of the vapour bubble is increased
- D. both viscosity and surface tension are increased. Discuss
- 5. Pick up the correct statement from the following :
Options- A. the tangent screw enables to give small movement under conditions of smooth and positive control
- B. standing on the tripod is the levelling head or trib arch
- C. the levelling screws are used to tilt the instrument so that its rotation axis is truly vertical
- D. all the above. Discuss
- 6. The bearings of the lines AB and BC are 146° 30' and 68° 30'. The included angle ABC is
Options- A. 102°
- B. 78°
- C. 45°
- D. none of these. Discuss
- 7. For the construction of highway (or railway)
Options- A. longitudinal sections are required
- B. cross sections are required
- C. both longitudinal and cross sections are required
- D. none of these. Discuss
- 8. A bearing of a line is also known as
Options- A. magnetic bearing
- B. true bearing
- C. azimuth
- D. reduced bearing Discuss
- 9. An ideal vertical curve to join two gradients, is
Options- A. circular
- B. parabolic
- C. elliptical
- D. hyperbolic
- E. none of these. Discuss
- 10. The accuracy of measurement in chain surveying, does not depend upon
Options- A. length of the offset
- B. scale of the plotting
- C. importance of the features
- D. general layout of the chain lines. Discuss
Surveying problems
Search Results
Correct Answer: these remain constant.
Correct Answer:
Correct Answer: indefinite features to be surveyed.
Correct Answer: both viscosity and surface tension are increased.
Correct Answer: all the above.
Correct Answer: 102°
Correct Answer: both longitudinal and cross sections are required
Correct Answer: true bearing
Correct Answer: parabolic
Correct Answer: general layout of the chain lines.
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