Discussion
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- Question
The scale of a vertical photograph of focal length f taken from height of H metres above M.S.L., at a point of reduced level h, is
Options- A.
- B.
- C.
- D.
- Correct Answer
-
- 1. Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel
Options- A. 24%
- B. 36%
- C. 40%
- D. 60%. Discuss
- 2. Pick up the correct statement from the following :
Options- A. Refraction correction is zero when the celestial body is in the zenith
- B. Refraction correction is 33' when the celestial body is on the horizon
- C. Refraction correction of celestial bodies depends upon their altitudes
- D. all the above. Discuss
- 3. The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called
Options- A. visible horizon
- B. sensible horizon
- C. celestial horizon
- D. true horizon
- E. none of the above. Discuss
- 4. The hour angle of the heavenly body for Greenwich meridian equals the hour angle of the body for any other meridian + longitude :
Options- A. mean sun
- B. true sun
- C. vernal equinox
- D. star
- E. all the above. Discuss
- 5. The difference in longitude of two places expressed in time is equal to the difference in their
Options- A. sidereal time
- B. apparent solar time
- C. mean solar time
- D. all the above. Discuss
- 6. The correction applied to the measured base of length L is
Options- A.
- B.
where w is the weight of tape/m - C.
where h is height difference of end supports - D. Reduction to mean sea level =
- E. all the above. Discuss
- 7. If the general ground level of any area is 10% of the flying height, the principal points may be used as the centres of radial directions for small scale mapping even in tilted photograph up to
Options- A. 1°
- B. 2°
- C. 3°
- D. 4° Discuss
- 8. The elevation of the star at elongation is obtained by
Options- A. sin ? = sin ? cosec ?
- B. sin ? = sin ? sec ?
- C. sin ? = cos ? sec ?
- D. sin ? = cos ? cosec ?. Discuss
- 9. The angle between the direction of star and the direction of earth's axis of rotation is called
Options- A. co-declination
- B. co-latitude
- C. declination
- D. latitude. Discuss
- 10. The position of a heavenly body on the celestial sphere can be completely specified by
Options- A. its altitude and azimuth
- B. its declination and hour angle
- C. its declination and right ascension
- D. all the above. Discuss
Advanced Surveying problems
Search Results
Correct Answer: 36%
Correct Answer: all the above.
Correct Answer: sensible horizon
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: 3°
Correct Answer: sin ? = sin ? cosec ?
Correct Answer: co-declination
Correct Answer: all the above.
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