1.
What is application of satellite systems?
A
None of the above
B
Whether forecasting
C
Terrestrial communication
D
point to point communication
Loading practice questions
55 practice sets · Page 1 of 3
What is application of satellite systems?
None of the above
Whether forecasting
Terrestrial communication
point to point communication
The frequency band used by most satellites is
EHF
UHF
VHF
SHF
A telephone communication link between two countries is established through a composite system using submarine cable and satellite when
Two countries are not different continents
Two countries are far apart
Political links between two countries have been severed
Two countiees are not facing common satellite
PCM system is used in satellite communications for transmission of
All the above
TV signal
Telegraph signal
Speech signal
Primary component of uplink section of satellite is
power station transmitter
transformer
transistor
earth station transmitter
As on-line, real time data transmission system is most likely to require a connection that is
Duplex
Time shared
Frequency shared
Simplex
True anomaly?
None of the above
The true anomaly is the angle from perigee to the satellite position, measured at the earths center.
The point longest from earth
The point closest approach to earth
Define diplexer.
None of above
The transmit & receives signals are separated in a device known as diplexer.
The transmit & receives signals are separated in a device known as diplexer
Either a or b.
Define S/N ratio.
None of above
The S/N introduced in the preceding section is used to refer to the ratio of signal power to noise power at the receiver output.This ratio is sometimes referred to s the post detector.
The S/N introduced in the preceding section is used to refer to the ratio of signal power to noise power at the receiver input. This ratio is sometimes referred to as the post detector.
Either a or b.
Ascending node?
None of the above
The point where the orbit crosses the equatorial plane going from south to north
The point longest from earth
The point closest approach to earth
Perigee?
The point farthest from earth
The point longest from earth
The point closest approach to earth
None of the above
Apogee?
The point farthest from earth
The point nearest from earth
The point smallest from earth
None of the above
Keplers first law states?
The path followed by a satellite around the primary will be an ellipse.
The path followed by a satellite around the primary will be an circle.
The path followed by a satellite around the primary will be an sphere
None of the above
Argument of perigee?
The angle from ascending node to perigee, measured in the orbital plane at the earth's center, in the direction of satellite motion.
The point longest from earth
The point closest approach to earth
None of the above
What are the methods of multiple acess techniques?
TDMA
FDMA
a&b
None of above
The multiple access technique suitable only for digital transmission is
TDMA
FDMA
Both (A) and (B)
Packet Access
Types of CDMA?
Spread spectrum multiple acess
pulse address multiple acess
a&b
None of above
The total noise of a satellite earth station receiving system consists of
Sky noise
Antenna and feeder noise
Parametric amplifier noise
All of the above
What are the types of antenna losses?
sky noise
Antenna losses
sky noise , Antenna losses
all of these
A television (TV) transmission is an example of which type of transmission?
Simplex
Half duplex
Full duplex
None of the above