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

View solution

Q. A geostationary satellite is one which

View solution

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

View solution

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

View solution

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

View solution

Q. For global communication, the number of satellites needed is

View solution

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

View solution

Q. The angle subtended by earth at geostationary communication satellite is

View solution

Q. 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

View solution

Q. A transponder is a satellite equipment which

View solution

Q. A geosynchronous satellite

View solution

Q. The first geostationary satellite launched in 1965 was called

View solution

Q. Rotation of a geosynchronous satellite means its

View solution

Q. The present total cost per watt of power generation in geosynchronous orbit is nearly Rs.

View solution

Q. Noise temperature of Sun is more than __________ °K.

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. 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.

View solution