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Home Civil Engineering Elements of Remote Sensing Comments

  • Question
  • Which one of the following parameters is considered to determine the reflectance of a vegetation canopy


  • Options
  • A. Solar zenith angle
  • B. Azimuth angle
  • C. Look angle
  • D. Number and arrangement of leaves
  • E. All of these

  • Correct Answer
  • All of these 


  • Elements of Remote Sensing problems


    Search Results


    • 1. The reflection of solar energy is characterised by the water content in the leaf, in the reflective optical infrared:

    • Options
    • A. visible (0.4 - 0.7 ?m) region
    • B. near-IR (0.7 - 1.3 ?m) region
    • C. short wave-IR (1.3 - 2.7 ?m) region
    • D. None of these
    • Discuss
    • 2. Leaf reflactance depends primarily on :

    • Options
    • A. the pigments
    • B. internal cell structure
    • C. equivalent water content
    • D. All of these
    • Discuss
    • 3. The coherence length over which there is a strong relationship between amplitudes is;

    • Options
    • A. directly proportional to the bandwidth
    • B. inversely proportional to the bandwidth
    • C. the square of the bandwidth
    • D. none of these
    • Discuss
    • 4. Which one of the following frequency regions is a part of sun's radiation?

    • Options
    • A. Ultraviolet frequency region
    • B. Visible frequency region
    • C. Infrared frequency region
    • D. Radio frequency region
    • E. All of these
    • Discuss
    • 5. Pick up the correct statement from the following

    • Options
    • A. The ratio of the up flux and down flux just above the snow surface, is called albedo
    • B. Spectral albedo of snow is calculated for the semi-infinite snow thickness
    • C. Water equivalent height of snow is the height of water column obtained by melting snow.
    • D. A homogeneous snow pack is one whose average grain size does not vary with depth.
    • E. All of these
    • Discuss
    • 6. The maximum energy stored at elastic limit of a material is called

    • Options
    • A. resilience
    • B. proof resilience
    • C. modulus of resilience
    • D. bulk resilience
    • Discuss
    • 7. Which of the following factors are associated with the behaviour of sand mass during earthquake to cause liquefaction?
      1. Number of stress cycles
      2. The frequency, and amplitude of vibration of waves generated by an earthquake
      3. Characteristics of sand
      4. Relative density
      Select the correct answer using the codes given below :

    • Options
    • A. 1, 2 and 3
    • B. 1, 2, 3 and 4
    • C. 2 and 4
    • D. 3 and 4
    • Discuss
    • 8. Ratio of bearing capacity of double Under Reamed (U.R.) pile to that of single U.R. pile is nearly

    • Options
    • A. 2
    • B. 1.5
    • C. 1.2
    • D. 1.7
    • Discuss
    • 9. Consider the following statements regarding Plane Table surveying :
      1. It is less accurate than chain surveying.
      2. It is not necessary to do accurate centering of plane table for small scale survey.
      3. Compass rule may be made use for adjusting the plane table transverse.
      4. From the instrument station, resectors are drawn to plot the position of object in the field.
      Of these statements :

    • Options
    • A. 1, 2 and 4 are correct
    • B. 2, 3 and 4 are correct
    • C. 1, 2 and 3 are correct
    • D. 1, 3 and 4 are correct
    • Discuss
    • 10. A horizontal rod AB carries three loads of 3.0 kg, 7.0 kg and 10.0 kg at distances of 2.0 cm, 9.0 cm and 15 cm respectively from A where it is hinged. Neglecting the weight of the rod, which is the point at which the rod will be balance?

    • Options
    • A. 10.95 cm form A
    • B. 11.25 cm from A
    • C. 12.55 cm from A
    • D. 13.25 cm form A
    • Discuss


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