Q. The noise temperature of sky is about __________ °K.

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Q. 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.

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

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Q. To cover all inhabited regions of the Earth, the number of geosynchronous communication satellites required

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

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

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Q. In envelope detection of an AM waveform

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Q. Shannon's Law relates

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

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Q. Point out the false statement.

Launching of geostationary experimental communication satellite has helped India to gain experience in

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

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Q. System satellites orbit the Earth once in

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Q. The lowest frequency used in satellite communications is __________ GHz.

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Q. Geosynchronous satellites are always launched in the equatorial plane because it is the only plane which provides

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

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

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

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Q. Phase modulation is commonly-used for data transmission mainly because

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

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

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