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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Q. A typical error rate on satellite circuits is one bit error in

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Q. Geosynchronous communication satellites travel around the earth in circular orbits with a forward speed of about __________ km/h.

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Q. In satellite communication, highly directional antennas are used to

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Q. The average noise temperature of Earth, as viewed from space, is __________ °K.

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Q. Low-orbit satellites are not used for communications because they

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

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Q. The echo heard by a telephone user on a satellite channel can be removed by using

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Q. The 1150 kg geosynchronous satellite INSAT-IA parked 36000 km above India had greatly improved India's

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Q. Presently, the worlds's largest and most advanced multi-purpose communication satellite is

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Q. A satellite link uses different frequencies for receiving and transmitting in order to

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Q. Mark out the WRONG statement.

As compared to FDMA, the demand assignment system TDMA

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Q. APPLE was into orbit on 19 th June 1981 by European Space Agency (ESA) from

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Q. A telephone user while talking to a person via a satellite has to wait for reply for about __________ millisecond.

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Q. Space communication links are being increasingly moved into Ka-band (200-30 GHz) because it

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Q. Which of the following statement regarding link loss for a satellite is wrong?

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

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Q. Regarding TASI which one of the following statements is wrong?

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