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- Question
In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
Options- A. adding 180°, if the given bearing is less than 180°
- B. subtracting 180°, if the given bearing, is more than 180°
- C. changing the cardinal points, i.e. substituting N for S and E for W and vice-versa
- D. none of these.
- Correct Answer
- changing the cardinal points, i.e. substituting N for S and E for W and vice-versa
- 1. Diopter is the power of a lens having a focal length of
Options- A. 25 cm
- B. 50 cm
- C. 75 cm
- D. 100 cm
- E. 125 cm Discuss
- 2. In chain surveying field work is limited to
Options- A. linear measurements only
- B. angular measurements only
- C. both linear and angular measurements
- D. all the above. Discuss
- 3. The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to
Options- A. the distance between the zero of gradient and the foot of the staff
- B. twice the distance between the zero of graduation and the foot of the staff
- C. thrice the distance between the zero of graduation and the foot of the staff
- D. none of the above. Discuss
- 4. Hydrographic surveys deal with the mapping of
Options- A. large water bodies
- B. heavenly bodies
- C. mountaineous region
- D. canal system
- E. movement of clouds. Discuss
- 5. Closed contours of decreasing values towards their centre, represent
Options- A. a hill
- B. a depression
- C. a saddle or pass
- D. a river bed. Discuss
- 6. If the radius of a simple curve is R, the length of the chord for calculating offsets by the method of chords produced, should not exceed.
Options- A. R/10
- B. R/15
- C. R/20
- D. R/25. Discuss
- 7. A soil has bulk density 2.30 g/cm3 and water content 15 per cent, the dry density of the sample, is
Options- A. 1.0 g/cm2
- B. 1.5 g/cm3
- C. 2.0 g/cm3
- D. 2.5 g/cm3 Discuss
- 8. A coarse-grained soil has a voids ratio 0.75, and specific gravity as 2.75. The critical gradient at which quick sand condition occurs, is
Options- A. 0.25
- B. 0.50
- C. 0.75
- D. 1.00 Discuss
- 9. Rankine's theory of active earth pressure assumes
Options- A. soil mass is homogeneous, dry and cohesionless
- B. ground surface is a plane which may be horizontal or inclined
- C. back of the wall is vertical and smooth
- D. wall yields about the base
- E. all the above. Discuss
- 10. Back fill with a sloping surface exerts a total active pressure Pa on the wall of height H and acts at
Options- A. H/4 above the base parallel to base
- B. H/2 above the base parallel to base
- C. H/3 above the base parallel to base
- D. H/5 above the base parallel to base. Discuss
Surveying problems
Search Results
Correct Answer: 100 cm
Correct Answer: linear measurements only
Correct Answer: twice the distance between the zero of graduation and the foot of the staff
Correct Answer: large water bodies
Correct Answer: a depression
Correct Answer: R/20
Correct Answer: 2.0 g/cm3
Correct Answer: 1.00
Correct Answer: all the above.
Correct Answer: H/3 above the base parallel to base
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