EC Engineering Satellite Communication Online Test

The first geostationary satellite launched in 1965 was called

Rotation of a geosynchronous satellite means its

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

Noise temperature of Sun is more than __________ °K.

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.

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

The angle subtended by earth at geostationary communication satellite is

A transponder is a satellite equipment which

A geosynchronous satellite

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

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 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.

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

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

Radio broadcasting is a familiar example of

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

Which one of the following statements regarding DSI is wrong?

Which one of the following statements regarding compandor is FALSE?

The quality of a space-link is measured in terms of the __________ ratio.

The useful operational life of INSAT-IB (launched in 1983) is expected to end by

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

Orbital disturbances of a geosynchronous satellite are caused by the

Which one of the following statement is correct?

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

A geostationary satellite is one which

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

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

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

A communication satellite is a repeater between