Radar Engineering and Satellite Communication MCQs

Question 1

For the earth station antennas to be 6 feet in diameter, the satellite frequency bands must be in

Accepted Answer

12/14 GHz range

Answer

4/6 GHz range

Answer

20/30 GHz range

Answer

both (a) and (b)

Question 2

The satellite orbit almost inveriably used with remote sensing satellites is the

Accepted Answer

Sun synchronous orbit

Answer

Geostationary orbit

Answer

Geosynchronous orbit

Answer

Molniya orbit

Question 3

Sith reference to geosynchronous and geostationary satellite orbits,

Accepted Answer

while a geostationary orbit is in the equatorial plane, the orbital plane of a geosynchronous satellite is inclined to the equatorial plane

Answer

the two are identical

Answer

the geosynchronous satellite orbit is in the plane of the equator

Answer

while geosynchronous orbits are mainly used for mateorological applications, geostationary satellite orbits are mainly used for communication applications

Question 4

The location of a geostationary satellite is always given in terms of

Accepted Answer

a certain longitude

Answer

a certain latitude

Answer

longitude and latitude

Answer

distance from earth's surface

Question 5

The orbital velocity of the satellite

Accepted Answer

is inversely proportional to square root of its distance from earth's centre

Answer

is directly proportional to its distance from earth's surface

Answer

depends upon the thrust with which it is launched

Answer

is continuously changing as the satellite revolves

Question 6

With reference to satellites, the first orbital velocity (u1) which is the minimum horizontal launch velocity required to put a satellite into a circular orbit around earth and second orbital velocity (1)2) which is the horizontal launch velocity which makes the satellite

Accepted Answer

lowest point in the orbit

Answer

highest point in the orbit

Answer

point in the parking orbit

Answer

name given to the boost motor that puts the satellite in the right parking slot

Question 7

For orbital velocity between the first orbital velocity (u1) and the second orbital velocity (u2), the satellite orbit would

Accepted Answer

be elliptical & eccentric

Answer

be circular

Answer

have zero eccentricity

Answer

be eccentric

Question 8

The satellite orbit that is highly inclined, elliptical and eccentric is the

Accepted Answer

Molniya orbit

Answer

Geostationary orbit

Answer

Geosynchronous orbit

Answer

Sun synchronous orbit

Question 9

A payload that is invariably found on all communications satellites is the

Accepted Answer

Transponder

Answer

Optical telescope

Answer

VHRR

Answer

Vidicon Camera