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Satellite Communication



mcqs by everyone

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


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


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


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


India's Polar Satellite Launch vehicle (PSLV) to be ready in 1991 is designed to launch 1000 kg spacecraft into __________ orbit


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


A colour television signal having bandwidth of 4.6 MHz is digitised using 10 bitssample.
The digital bit rate used for its transmission with PCM would be __________ kilobits/second


The ending part of the popular teleserial Mahabharat will be beamed to the viewers


In satellite communication, highly directional antennas are used to


The angle subtended by earth at geostationary communication satellite is


To make antenna more directional, either its size must be increased or


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


For global communication, the number of satellites needed is


The INTELSAT-IV satellite launched in 1974 had two earth coverage antenna and two narrower-angle antennas subtending 4.5°. The signal from narrow-angle antenna was stronger than that from earth- coverage antenna by a factor of


For satellite communication, standard Earth stations have antenna diameters in the range of __________ metre


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


In the case of a 70-MHz IF carrier for a transponder bandwidth of 36 MHz, energy must lie between MHz


The degradation of satellite solar cells with time is mainly due to


Which of the following factor does NOT contribute to the drift of a geostationary satellite from its stationary position in space


Which one of the following statements regarding DSI is wrong


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


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


In synchronous detection of an AM signal


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


A communication satellite is a repeater between


At present, the radio-frequency band mainly used by most satellites is


In envelope detection of an AM waveform


Noise temperature of Sun is more than __________ °K


The geostationary communication satellite APPLE is parked in the equatorial orbit at


In communication satellites, the up-link normally operates at a higher frequency than the down-link because it