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Satellite Communication



mcqs by everyone

The Sun blots out the transmission of a geosynchronous satellite twice a year when satellite passes directly in front of it. This outage lasts for about


The distance of a synchronous satellite from Earth's surface is __________ km


In synchronous detection of an AM signal


Radio broadcasting is a familiar example of


The number of days when Earth's shadow falls on a geosynchronous satellite is


The traffic-handling capacity of an Earth station on the uplink depends on


Rotation of a geosynchronous satellite means its


A modem is


In the context of error detection in satellite transmission, ARQ stands for


India's first three-axis stabilised geostationary communication satellite is


Master control facility (MCF) for INSAT-2 series satellites is located at


System satellites orbit the Earth once in


For global communication, the number of satellites needed is


The maximum signal propagation time of a geosynchronous satellite transmission is about __________ millisecond


Power received from Sun per m2 surface area of a geosynchronous satellite in nearly __________ watt


While keeping the down-link frequency constant, the diameter of a satellite antenna is reduced byhalf.
To offer the same EIRP over the increased coverage area, the RF output power has to be increases by a factor of


Most of the communication satellites are stationed to the West of their service areas in order to reduce their


Presently, the worlds's largest and most advanced multi-purpose communication satellite is


In selecting a satellite system, the First determining factor is its


In envelope detection of an AM waveform


As compared to 17.34° antenna, the total increase in the signal relayed by 4.5° antenna of INTELSAT-IV is


A geosynchronous satellite


Depending on the technique used, digitized television requires a bit rate between __________ millions


APPLE was into orbit on 19 th June 1981 by European Space Agency
(ESA) from


The communication satellite INSAT-IB had to take up the job of INSAT-IA because the latter collapsed within __________ months of its launch


The different access methods which permit many satellite users to operate in parallel through a single transponder without interfering with each other as


Low-orbit satellites are not used for communications because they


Noise temperature of Sun is more than __________ °K


A certain sound has 10000 times more energy than anothersound.
The number of times it would sound stronger to a listener is


The life time of a geosynchronous communication