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Free download in PDF Remote Sensing Multiple Choice Questions with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
61
Which one of the following residual biases involves the GPS accuracy?
[A]
Satellite dependent biases due to uncertainty in the orbital parameters of the satellite
[B]
Receiver -dependent biases due to clock stability with line
[C]
Signal propagation biases due to the sphere and troposphere propagation
[D]
All the above
62
The value of energy quantum for radiation of any frequency is proportional to:
[A]
The frequency
[B]
The reciprocal of the energy
[C]
The square of the frequency
[D]
The square root of the frequency
63
The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called:
[A]
Sensors
[B]
Passive sensors
[C]
Active sensors
[D]
None of these
64
The most widely used antenna in GPS is
[A]
Parabolic antenna
[B]
Microstrip antenna
[C]
Horn antenna
[D]
None of these
Answer: Microstrip antenna
65
Orbital radius of GPS satellites is approximately:
[A]
15,200 km
[B]
26,600 km
[C]
18,400 km
[D]
36,000 km
66
Pick up the correct statement from the following
[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]
All of these
67
The basic requirement of any sensor system is:
[A]
Radiometric resolution
[B]
Spatial resolution
[C]
Spectral resolution
[D]
All of these
68
Pick up the correct statement from the following:
[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]
All of these
69
Pick up the correct statement from the following:
[A]
A graphical representation of spectral reflectance verses the various growth stages of a crop, depicts a phonologic pattern
[B]
The changes in the polarisation of the radiation reflected or emitted by an object, is known as polarisation variation
[C]
The degree of polarisation is a characteristic of the object which helps in the identification of the object
[D]
All of these
70
A perfectly black
[A]
Is a diffuse emitter
[B]
Absorbs all the radiations of every wave lengths
[C]
Emits power of every wave length
[D]
All the above
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