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First question Marks: % 30 First question Marks: % 30.

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Presentation on theme: "First question Marks: % 30 First question Marks: % 30."— Presentation transcript:

1 First question Marks: % 30 First question Marks: % 30

2 Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer The dynamic height measured by:  Gal.  Gal. meter,  Meter.

3 Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer The geopotential surfaces are:  Ellipsoidal,  parallels to geoid,  physical surfaces,  parallel to earth's topography.

4 Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer First-order triangulation points are established by:  resection and intersection,  Astronomical methods,  Base extension net,  The gravitational methods.

5 Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer Legendre's theorem applied in reducing:  spherical triangle to plane triangle,  plane triangle to spherical triangle,  sphere to plane,  length on topography to ellipsoid.

6 Choose the correct complement (complements) for the following statements by checking mark  in the box. Answer The reduced measured distance to the ellipsoid is:  Normal section,  geodetic line,  Arc of circle.

7 The dynamic height measured by:  Gal.  Gal. meter,  Meter. Choose the correct complement (complements) for the following statements by checking mark  in the box. 

8 The geopotential surfaces are:  Ellipsoidal,  parallels to geoid,  physical surfaces,  parallel to earth's topography. Choose the correct complement (complements) for the following statements by checking mark  in the box. 

9 First-order triangulation points are established by:  resection and intersection,  Astronomical methods,  Base extension net,  The gravitational methods. Choose the correct complement (complements) for the following statements by checking mark  in the box.  

10 Legendre's theorem applied in reducing:  spherical triangle to plane triangle,  plane triangle to spherical triangle,  sphere to plane,  length on topography to ellipsoid. Choose the correct complement (complements) for the following statements by checking mark  in the box.  

11  The reduced measured distance to the ellipsoid is:  Normal section,  geodetic line,  Arc of circle.

12 Second question Marks: % 40 Second question Marks: % 40

13 Answers Calculate the height of a geodetic mark on point B considering effects of: curvature of earth's surface; vertical refraction; height of point B above the instrument surface A. Where: Distance= 30 km; refraction constant= 0.15; H A =300 m; H B = 355 m; instrument height= 1.6 m; R= 6371 km.

14 Third question Marks: % 30 Third question Marks: % 30

15 Answers A distance D were measured between two points A and B by the normal section. Find out the reduced distance between A and B to the geodetic line by Euler theorem. Where: α = 45˚; φA = 60˚; a = 6378388; b = 6356912; H A = 240 m; H B = 300 m; D= 12 km; R = 6371 km

16 effects of curvature of earth's surface effects of vertical refraction effects of height of point B above A

17 reduced distance between A and B

18 Good Luck


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