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Home Civil Engineering Elements of Remote Sensing Comments

  • Question
  • Which one of the following statements is correct regarding the GPS satellites?


  • Options
  • A. The nominal altitude is about 20, 200 km
  • B. The inclination of axis satellite is 55°
  • C. The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)
  • D. All of these

  • Correct Answer
  • All of these 


  • Elements of Remote Sensing problems


    Search Results


    • 1. Pick up the correct definition from the following with response to GIS.

    • Options
    • A. Common boundry between two areas of a locality is known as adjacency.
    • B. The area features which are wholly contained within another area feature, is known so containment.
    • C. The geometric property which describes the linkage between line features is defined as connectivity.
    • D. All of these.
    • Discuss
    • 2. The value of energy quantum for radiation of any frequency is proportional to :

    • Options
    • A. the frequency
    • B. the reciprocal of the energy
    • C. the square of the frequency
    • D. the square root of the frequency
    • Discuss
    • 3. In the given figure the phase of

    • Options
    • A. crest A is ?/2
    • B. B crossing is ?
    • C. trough C is 3 ?/2
    • D. All of these
    • Discuss
    • 4. Pick up the correct statement from the following:

    • Options
    • A. The surface defined by the locus of points having same phase, is called a wave front.
    • B. The wave whose surface of constant phase are parallel planes, is known as a plane wave.
    • C. The relative phase difference between the waves is important and not the absolute phase of a point on the wave
    • D. All of these
    • Discuss
    • 5. Which one of the following helps to identify the objects on the earth surface?

    • Options
    • A. atmospheric window
    • B. signature
    • C. radiometric error
    • D. None of these
    • Discuss
    • 6. Pick up the correct statement from the following:

    • Options
    • A. Permeability is a measure of conducting the magnetic lines of force in the material.
    • B. Permeability is a measure of the extent to which magnetic lines of force can penetrate a medium.
    • C. Permeability is expressed as the ratio of the magnetic flux density (B) to the field strength of the magnetizing field.
    • D. The force between the magnetic poles is inversely proportional to the permeability of the medium.
    • E. All of these
    • Discuss
    • 7. Due to pertubation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its

    • Options
    • A. six ground stations
    • B. five ground stations
    • C. four ground stations
    • D. three ground stations
    • Discuss
    • 8. 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
    • 9. 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
    • 10. 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


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