Discussion
Home ‣ Civil Engineering ‣ Surveying Comments
- Question
The area of a plane triangle ABC, having its base AC and perpendicular height h, is
Options- A.
bh - B. ba sin C
- C. bc sin A
- D. S(S - a)(S - b)(S - c)
where S is
- E. all the above
- Correct Answer
- all the above
- 1. A dumpy level is set up with its eye-piece vertically over a peg A. The height from the top of peg A to the centre of the eye-piece is 1.540 m and the reading on peg B is 0.705 m. The level is then setup over B. The height of the eye-piece above peg B is 1.490 m and a reading on A is 2.195 m. The difference in level between A and B is
Options- A. 2.900 m
- B. 3.030 m
- C. 0.770 m
- D. 0.785 m
- E. 1.770 m. Discuss
- 2. The systematic errors which persist and have regular effects in the performance of a survey operation, are due to
Options- A. carelessness
- B. faulty instrument
- C. inattention
- D. none of these. Discuss
- 3. Pick up the correct specification of Ramsden eyepiece from the following :
Options- A. it consists of two equal piano convex lenses
- B. the curved surfaces of plano-convex lenses face each other
- C. the two lenses are separated by a distance equal to 2/3 of the focal length of either lens.
- D. the distance between the diaphragm and the front lens of the eyepiece is kept equal to 1/4 th of the focal length of a lens so that rays from a point on the diaphragm enter the eye as a parallel beam
- E. all the above. Discuss
- 4. Cross hairs in surveying telescopes, are fitted
Options- A. in the objective glass
- B. at the centre of the telescope
- C. at the optical centre of the eye piece
- D. in front of the eye piece. Discuss
- 5. On a diagonal scale, it is possible to read up to
Options- A. one dimension
- B. two dimensions
- C. three dimensions
- D. four dimensions. Discuss
- 6. A relatively fixed point of known elevation above datum, is called
Options- A. bench mark
- B. datum point
- C. reduced level
- D. reference point. Discuss
- 7. Geodetic surveying is undertaken
Options- A. for production of accurate maps of wide areas
- B. for developing the science of geodesy
- C. making use of most accurate instruments and methods of observation
- D. for determination of accurate positions on the earth's surface of system of control points
- E. all the above. Discuss
- 8. In levelling operation
Options- A. if second reading is more than first, it represents a rise
- B. if first reading is more than second, it represents a rise
- C. if first reading is less than second, it represents a fall
- D. if second reading is less than first, it represents a fall
- E. both (b) and (c). Discuss
- 9. The conventional sign shown in below figure represents a
Options- A. bridge carrying railway below road
- B. bridge carrying road below railway
- C. bridge carrying road and railway at the same level
- D. a level crossing. Discuss
- 10. A dumpy level was set up at the midpoint between two pegs A and B, 50 m apart and the staff readings at A and B were 1.22 and 1.06. With the level set up a A, the readings at A and B were 1.55 and 1.37. The collimation error per 100 m length of sight is
Options- A. 0.02 m inclined upwards
- B. 0.04 m inclined downwards
- C. 0.04 m inclined upward
- D. none of these. Discuss
Surveying problems
Search Results
Correct Answer: 0.770 m
Correct Answer: faulty instrument
Correct Answer: all the above.
Correct Answer: in front of the eye piece.
Correct Answer: three dimensions
Correct Answer: bench mark
Correct Answer: all the above.
Correct Answer: both (b) and (c).
Correct Answer: bridge carrying railway below road
Correct Answer: 0.04 m inclined downwards
Comments
There are no comments.More in Civil Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.