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Satellite Communication



mcqs by everyone

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


Geosynchronous communication satellites travel around the earth in circular orbits with a forward speed of about __________ km/h


Of the four INSAT-I satellites planned by India so for, only __________ has proved to be successful


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


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


A geosynchronous satellite


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


The discussing sharing of a communication satellite by many geographically dispersed Earth station, DAMA means


The owner of a communication satellite is usually required to keep the spacecraft on station at its assigned place in the geosynchronous orbit with an accuracy of __________ degree


For satellite transmission, analog signals may be converted into digital form with the help of


The most effective anti jamming technique is


A communication satellite is a repeater between


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


A 20 m antenna gives a certain uplink gain at frequencies of 4/6GHz.
For getting same gain in the 20/30 GHz band, antenna size required is metre


A typical error rate on satellite circuits is one bit error in


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


In a stop-and-wait ARQ system, the transmitting terminal


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


Assuming earth to be a sphere of radius 6400 km and height of a geosynchronous satellite above Earth as 36000 km, the velocity of a geosynchronous satellite is __________ km/hr


The expression for satellite link frequencies such as 4/6 GHz denotes that


In envelope detection of an AM waveform


A typical signal strength received from a geosynchronous communication satellite is of the order of a few


A few minutes disturbance in space communications occurs twice a year during Sunblinding when __________ are in line


India's first domestic geostationary satellite 1NSAT-IA was launched on 10th April 1982 from


Satellite launch sites are invariably located on Eastern seaboards to ensure that


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


The 1150 kg geosynchronous satellite INSAT-IA parked 36000 km above India had greatly improved India's


The average noise temperature of Earth, as viewed from space, is __________ °K


When a communication satellite passes into Earth's shadow, its temperature drops to about __________ ° K


A geostationary satellite is one which