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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. Mark out the WRONG statement.

As compared to FDMA, the demand assignment system TDMA

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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.

View solution

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

View solution

Q. Master control facility (MCF) for INSAT-2 series satellites is located at

View solution

Q. The communication satellite INSAT-IB had to take up the job of INSAT-IA because the latter collapsed within __________ months of its launch.

View solution