Q. Which one of the following statement is correct?

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. A modem is

View solution

Q. In synchronous detection of an AM signal

View solution

Q. A typical signal strength received from a geosynchronous communication satellite is of the order of a few

View solution

Q. The expression for satellite link frequencies such as 4/6 GHz denotes that

View solution

Q. Assuming a minimum angle of elevation of 5°, a geosynchronous satellite remains in line-of-sight for __________ percentage of Earth's surface.

View solution

Q. After the death of INSAT-IB, the mainstay of the entire Indian satellite network for some time to come would be

View solution

Q. Which statement out of the following statement is wrong?

View solution

Q. For satellite transmission, analog signals may be converted into digital form with the help of

View solution

Q. The maximum signal propagation time of a geosynchronous satellite transmission is about __________ millisecond.

View solution

Q. The life time of a geosynchronous communication

View solution

Q. The noise temperature of sky is about __________ °K.

View solution

Q. Assuming earth to be a sphere of radius 6400 km and height of a geosynchronous satellite above Earth as 36000 km, the velocity of a geosynchronous satellite is __________ km/hr.

View solution

Q. In the context of error detection in satellite transmission, ARQ stands for

View solution

Q. To cover all inhabited regions of the Earth, the number of geosynchronous communication satellites required

View solution