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Elements Of Remote Sensing

Elements Of Remote Sensing
In GPS, receivers are used are;

Electronic clocks
Atomic clocks
Quartz clocks
Mechanical clocks

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Elements Of Remote Sensing
The most widely used antenna in GPS is

Microstrip antenna
Horn antenna
Slotted antenna
Parabolic antenna

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Elements Of Remote Sensing
If electric permittivity and magnetic permeability of the medium are respectively ‘ε’ and ‘μ’, then the velocity (Cm) of the electromagnetic wave in the medium is given by:

Cm = 1/√8 μ
None of these
Cm = 1/εμ
Cm = 5/√εμ

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Elements Of Remote Sensing
Consider the following statements regarding the satellite imaging: 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed areaWhich one of the following statements is/are correct?

1, 2
2, 3
1, 2, 3
1, 3

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Elements Of Remote Sensing
Which one of the following attributes is not associated with digital maps

Legends
Symbology
Color
South arrow

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Elements Of Remote Sensing
The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called:

None of these
Spatial variation
Spectral variation
Temporal variation

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