Home / Civil Engineering / Surveying :: section-9

Civil Engineering :: Surveying

  1. Longitudes are measured from 0° to

  2. A.

     180° eastward

    B.

     180° westward

    C.

     180° east or westward

    D.

     360° eastward


  3. If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by

  4. A.

     sin H = tan φ . cot δ

    B.

     cos H = tan φ . cot δ

    C.

     tan H = tan φ . cot δ

    D.

     None of these


  5. If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer, then the azimuth of the star at elongation is given by

  6. A.

     sin z = sec φ . cos δ

    B.

     cos z = sec φ . cos δ

    C.

     tan z = sec φ . cos δ

    D.

     None of these


  7. The altitude of a circumpolar star is maximum when it is

  8. A.

     At east elongation

    B.

     At upper culmination

    C.

     At west elongation

    D.

     At lower culmination


  9. Rotation of the camera at exposure about its vertical axis, is known as

  10. A.

     Swing

    B.

     Tilt

    C.

     Tip

    D.

     None of these


  11. The angle between the observer's meridian and declination circle of a heavenly body, is known as

  12. A.

     Hour angle

    B.

     Azimuth

    C.

     Right ascension

    D.

     Declination


  13. A metallic tape is made of

  14. A.

     steel

    B.

     invar

    C.

     linen

    D.

     cloth and wires


  15. The suitable contour interval for a map with scale 1 : 10000 is

  16. A.

     2 m

    B.

     5 m

    C.

     10 m

    D.

     20 m


  17. Which of the following methods of plane table surveying is used to locate the position of an inaccessible point ?

  18. A.

     radiation

    B.

     intersection

    C.

     traversing

    D.

     resection


  19. Which of the following errors cannot be eliminated by taking both face observations ?

  20. A.

     error due to horizontal axis not being perpendicular to the vertical axis

    B.

     index error i.e. error due to imperfect adjustment of the vertical circle vernier

    C.

     error due to non-parallelism of the axis of telescope level and line of collimation

    D.

     none of the above