WorksheetsQuiz 1 NMK41003
Total questions: 20
Worksheet time: 15mins
Below are the reasons satellite is used for communications EXCEPT
low maintenance cost for long distance services
can serve for other applications, such as remote sensing, meteorology, navigation, rescue
capable to cater several channels simultaneously via a narrowband spectrum
transmission is accessible regardless geographical locations
Which condition is TRUE for an elliptical orbit?
0 < e < 1
e = 0
e = 1
None of the above
The reason the satellite orbit deploys the shape of an ellipse or circle is
the most efficient geometry
the satellite position can be easily specified
the satellite consumes less fuel
the satellite has better coverage on earth
Satellite moves faster at location near to sun, and slow down when far from sun.
TRUE
FALSE
Multiple users share the same frequency, but each user is assigned a unique time slot. Which multiple access technique is referred to?
FDMA
SDMA
TDMA
CDMA
The time period taken by the satellite to complete one orbit is called
synodic period
sidereal period
lapsed time
time period
The angle of inclination for a satellite following an equatorial orbit is
90°
0°
45°
180°
Starlink satellite used
MIMO Antenna
Phased Array Antenna
Circular-polarized antenna
Microstrip patch antenna
What will happen to the number of traffic burst, nt if the frame efficiency, ηF is reduced?
Increase
Decrease
Nothing will change
Select ONE (1) band from the followings that cannot be used for satellite communications.
X
MF
K
C
The height for the Geostationary satellite is
500 km
45930 km
35930 km
55930 km
Common baseband signals transmitted from the earth ground station are
computer data and navigational data
voice, video, and computer data
computer data, navigational data, and voice
navigational data, computer data, and video
A large spectrum space between the uplink and downlink satellite signal is needed to
reduce latency
lessen interference
increase efficiency
minimize attenuation
The transponder is considered as the heart of the communications satellite is deployed for below purposes EXCEPT
amplifying the weak received signals
suppressing any noise occurs in the received signals
shifting the frequency of the received signals
altering the satellite to move in the right orbital position
X is a satellite with the altitude of 7,500 km from the earth, one complete orbit motion within 5 hours, and latency of 120 ms. X is
a geostationary orbit (GEO) satellite
a highly elliptical orbit (HEO) satellite
a medium earth orbit (MEO) satellite
a low earth orbit (LEO) satellite
The latency for the Starlink satellite is about:
75 ms
10 ms
25 ms
50 ms
Size of the ellipse depends on the _________.
mass of the satellite
mass of the Earth
distance from Earth to the satellite
gravitation constant
The Measat 3d is launched for the major purpose of...
video streaming
broadcasting
Internet coverage
navigation
Kepler’s first law states?
The path followed by a satellite around the primary will be an circle
A radius vector joining any planet to the sun sweeps out equal areas in equal lengths of time
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 sphere
The earth area covered by Satellite radio beam
Beamwidth
Footprint
Bandwidth
Zone
