12 JULY 2021 CURRENT AFFAIRS QUIZ

Remote sensing techniques make use of the properties of ___________ emitted, reflected or diffracted by the sensed objects:

Wind waves

Electromagnetic waves

Sound waves

Electric waves

TRUE ANSWER : ?
YOUR ANSWER : ?

The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called:

Passive remote sensing

None of these

Neutral remote sensing

Active remote sensing

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Look angle

All of these

Solar zenith angle

Azimuth angle

TRUE ANSWER : ?
YOUR ANSWER : ?

The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:

0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm

4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm

All of these

2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one the following is a correct statement?

The layers of the soil parallel to the earth surface are called horizons

All of these

The transitional layer between two adjoining horizons is called boundary

The vertical section of the soil extending into the parent material, is called profile

TRUE ANSWER : ?
YOUR ANSWER : ?

The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called:

Active sensors

None of these

Passive sensors

Sensors

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YOUR ANSWER : ?

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

The nominal altitude is about 20,200 km

The inclination of axis satellite is 55°

All of these

The satellite transmits two L band signals (L1 with 1575.42 MHz and L2 with 1276.6 MHz)

TRUE ANSWER : ?
YOUR ANSWER : ?

The normal altitude of GPS satellite is about

16,200 km

24,400 km

20,200 km

36,100 km

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YOUR ANSWER : ?

Orbital radius of GPS satellites is approximately:

18,400 km

36,000 km

26,600 km

15,200 km

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YOUR ANSWER : ?

Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:

Russia

India

USA

European Union

TRUE ANSWER : ?
YOUR ANSWER : ?