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Free download in PDF Remote Sensing Multiple Choice Questions and 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.
(1)
Pick up the correct statement from the following:
[A]
Topology describes the geometric characteristic of objects which do not change under transformations and are independent of any coordinate system
[B]
Topological characteristics of an object are independent of scale measurement
[C]
The three elements of topology are adjacency, containment, and connectivity
[D]
All of these
(2)
Pick up the correct statement from the following:
[A]
In remote sensing technique, the observation place, is called a platform
[B]
Platforms may be either stationary or mobile
[C]
Spatial resolution of the imaging system becomes poorer with increase of platform height
[D]
All of these
(3)
Coherence of two electromagnetic waves takes place if their phase difference is:
[A]
Constant in time
[B]
Constant in space
[C]
Constant in time and space
[D]
None of these
Answer: Constant in time and space
(4)
Pick up the correct statement from the following:
[A]
For the same feature, the photograph taken from the satellite vertically above the aircraft, the height displacement is lesser than 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]
All of the above
(5)
Which one of the following parameters is considered to determine the reflectance of a vegetation canopy?
[A]
Solar zenith angle
[B]
Azimuth angle
[C]
Look angle
[D]
All of these
(6)
Which one of the following errors is produced by platform characteristics of the sensor?
[A]
Altitude variation
[B]
Altitude
[C]
Orbit drift
[D]
All of these
(7)
Leaf reflectance depends primarily on:
[A]
The pigments
[B]
Internal cell structure
[C]
Equivalent water content
[D]
All of these
(8)
If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height
[A]
h = dp/(B/H)
[B]
h = (B/H) dp
[C]
h = dp/(H/B)
[D]
h = (H/B) dp
(9)
DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within
[A]
25 km
[B]
50 km
[C]
75 km
[D]
100 km
(10)
A and B are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?
[A]
Height displacement of A will be less than that of B
[B]
Height displacement of B will be less than that of A
[C]
Height displacement of A and B is equal
[D]
Height displacement of A and B will be towards each other
Answer: Height displacement of A will be less than that of B
(11)
The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:
[A]
10-10 to 106 m
[B]
10-8 to 106 m
[C]
10-10 to 1010 m
[D]
10-8 to 108 m
(12)
Pick up the important characteristic of a target which facilitates its identification from the following:
[A]
Spectral variation
[B]
Spatial variation
[C]
Temporal variation
[D]
All of these
(13)
Which one of the following statements is correct?
[A]
The function of an information system is to improve one s ability to make decisions
[B]
The information system is the chain of operations
[C]
A map is a collection of stored, analysed data, its stored information is suitability used in making decisions
[D]
All the above
(14)
Which one of the following geometric errors of satellite sensors is random?
[A]
Scan skew
[B]
Panoramic distortion
[C]
Earth rotation
[D]
Altitude variation
Answer: Altitude variation
(15)
Pick up the correct statement from the following:
[A]
The first man-made satellite, Sputnik-l’ was launched on 4th October, 1957
[B]
The United State’s Explorer 6 transmitted the first picture of the earth in August 1959
[C]
Television Infrared Observation Satellite (TIROS) designed for meteorological observations, started systematic earth observations from space from 1, April, 1960
[D]
All of these
(16)
Which one of the following frequency regions is a part of sun’s radiation?
[A]
Ultraviolet frequency region
[B]
Infrared frequency region
[C]
Radio frequency region
[D]
All of these
(17)
The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:
[A]
Ozone hole
[B]
Atmospheric window
[C]
Ozone window
[D]
Black hole
Answer: Atmospheric window
(18)
In GPS, receivers used are;
[A]
Electronic clocks
[B]
Atomic clocks
[C]
Quartz clocks
[D]
Mechanical clocks
(19)
For C band Synthetic Aperture Radar (SAR) with Doppler band width of 1300 Hz, the coherence length loch is:
[A]
130 km
[B]
230 km
[C]
250 km
[D]
500 km
(20)
Which one of the following attributes is not associated with digital maps
[A]
Colour
[B]
Symbology
[C]
Legends
[D]
South arrow
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