Discussion
Home ‣ Civil Engineering ‣ Advanced Surveying Comments
- Question
The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is
Options- A.
- B.
- C.
- D.
- Correct Answer
-
- 1. Pick up the correct statement from the following :
Options- A. The angle between the plane of the negative and the horizontal plane containing perspective axis is the tilt of the photograph
- B. The direction of maximum tilt is defined by the photo principal line
- C. The principal plane is truly vertical plane which contains perspective centre as well as principal point and plumb point
- D. All the above. Discuss
- 2. In a tropical year, the number of sidereal days, are
Options- A. 365
- B. 365.2224
- C. 365.2422
- D. 366.2422
- E. 366.2224. Discuss
- 3. The height displacement on a vertical photograph
Options- A. increases as the horizontal distance increases from the principal point
- B. increases as the ground elevation increases
- C. decreases as the flying height increases
- D. all the above. Discuss
- 4. Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.
Options- A. by subtracting their longitudes if places are in the same hemisphere
- B. by adding their longitudes if places are in the different hemispheres
- C. by subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres
- D. all the above. Discuss
- 5. The correction for parallax, is
Options- A. - 8".8 cos ?
- B. + .8" sin ?
- C. + 8".8 cos ?
- D. - 8".8 cos ?. Discuss
- 6. Systematic errors
Options- A. always follow some definite mathematical law
- B. can be removed by applying corrections to the observed values
- C. either make the result too great or too small
- D. are also known as cumulative errors
- E. all the above. Discuss
- 7. 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
- 8. 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
- 9. 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
- 10. 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
Advanced Surveying problems
Search Results
Correct Answer: All the above.
Correct Answer: 366.2422
Correct Answer: all the above.
Correct Answer: by subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres
Correct Answer: + 8".8 cos ?
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: sensible horizon
Correct Answer: all the above.
Comments
There are no comments.More in Civil Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.