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

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

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

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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.

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

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

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Q. Radio broadcasting is a familiar example of

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

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Q. Which one of the following statements regarding DSI is wrong?

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Q. Which one of the following statements regarding compandor is FALSE?

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

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

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

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Q. Orbital disturbances of a geosynchronous satellite are caused by the

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Q. Which one of the following statement is correct?

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Q. The Sun blots out the transmission of a geosynchronous satellite twice a year when satellite passes directly in front of it. This outage lasts for about

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Q. In satellite communication, frequency modulation is used because satellite channel has

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

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

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

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