Discussion
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- Question
The angle between two plane mirrors of optical square, is
Options- A. 20°
- B. 30°
- C. 45°
- D. 60°
- E. 90°.
- Correct Answer
- 45°
- 1. When the bubble of the level tube of a level, remains central
Options- A. line of sight is horizontal
- B. axis of the telescope is horizontal
- C. line of collimation is horizontal
- D. geometrical axis of the telescope is horizontal. Discuss
- 2. Let angular value of one graduation of a tube of length x be ? seconds and R be the radius of its internal curved surface, then
Options- A.
- B.
- C.
- D.
.
Discuss
- 3. Centering error of a theodolite produces an error
Options- A. in all angles equally
- B. which does not vary with the direction or pointing
- C. which varies with the direction of pointing and inversely with the length of sight
- D. none of these. Discuss
- 4. The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every
Options- A. 100 sq. km of area
- B. 150 sq. km of area
- C. 200 sq. km of area
- D. none of these. Discuss
- 5. Pantagraph is used for
Options- A. measuring distances
- B. measuring areas
- C. enlarging or reducing plans
- D. setting out right angles Discuss
- 6. In optical reading instruments
Options- A. the vertical circle is usually continuous from 0° to 359°
- B. the readings increase when the telescope is elevated in the face left position
- C. the readings decrease when the telescope is elevated in the face right position
- D. all the above. Discuss
- 7. The operation of making the algebraic sum of latitudes and departures of a closed traverse, each equal to zero, is known
Options- A. balancing the sights
- B. balancing the departures
- C. balancing the latitudes
- D. balancing the traverse. Discuss
- 8. Pick up the correct statement from the following :
Options- A. the power of a lens is the reciprocal of its focal length
- B. the unit of power of the lens is diopter
- C. the power of two or more thin lenses in contact is the power of the combination of the lenses
- D. all the above. Discuss
- 9. A back sight
Options- A. is always taken on a point of known elevation or can be computed
- B. is added to the known level to obtain the instrument height
- C. taken on an inverted staff is treated as negative
- D. all the above. Discuss
- 10. The diaphragm of a stadia theodolite is fitted with two additional
Options- A. horizontal hairs
- B. vertical hairs
- C. horizontal and two vertical hairs
- D. none of these. Discuss
Surveying problems
Search Results
Correct Answer: line of sight is horizontal
Correct Answer:
Correct Answer: which varies with the direction of pointing and inversely with the length of sight
Correct Answer: 200 sq. km of area
Correct Answer: enlarging or reducing plans
Correct Answer: all the above.
Correct Answer: balancing the traverse.
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: horizontal hairs
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