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Civil Engineering :: Elements of Remote Sensing

  1. The optical property of a water body depends on:

  2. A.

    absorption by the disolved material

    B.

    absorption by the suspended particulate matter

    C.

    scattering by the surpended particulate matter

    D.

    All of these


  3. Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:

  4. A.

    USA

    B.

    European Union

    C.

    Russia

    D.

    India


  5. Electromagnetic spectrum contains :

  6. A.

    gamma rays (wave length < 10-10 m)

    B.

    ultraviolet rays (wave length < 10-6 m)

    C.

    infrared rays (wave length < 10-4 m)

    D.

    radio rays (wave length > 1 m)

    E.

    All of these


  7. The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called:

  8. A.

    reflectance

    B.

    reflectance factor

    C.

    albedo

    D.

    none of these


  9. Spatial variation in horizontal and vertical directions, is caused due to :

  10. A.

    physical weathering of rocks

    B.

    chemical weathering of rocks

    C.
    biological'weathering of rocks
    D.
    All of these

  11.  

    The code based GPS receivers are generally used for:

  12. A.
    Vehicle tracking
    B.

    Land navigation

    C.
    Trans movement
    D.

    All of these


  13. Critical angle of electromagnetic radiation takes place if

  14. A.

    angle of incidence is equal to angle of refraction

    B.

    angle of incidence is greater than the angle of refraction

    C.

    angle of incidence is equal to 90°

    D.

    angle of refraction is equal to 90°


  15.  

    The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is :

  16. A.

    8

    B.

    12

    C.
    16
    D.

    24


  17. Pick up the correct statement from the following:

  18. A.

    For the same feature, the photograph taken from the satellite vertically above the aircraft, the height displacement is lesser than the the aerial photograph.

    B.

    The scale of the aerial photograph depends upon the scale of the topography

    C.

    The feature at the principal point has no height displacement.

    D.

    The scale of the topography of regions of higher elevation with the same flying height, is larger than that of the area of lower elevation.

    E.

    All of the above


  19. Which one of the following geometric errors of satellite sensors is random ?

  20. A.

    scan skew

    B.

    panoramic distortion

    C.

    earth rotation

    D.

    altitude variation