Satellite Communication Questions and Answers | Online Quiz for Practice

46. Ascending node?

1. The point where the orbit crosses the equatorial plane going from south to north
2. The point longest from earth
3. The point closest approach to earth
4. None of the above

47. Define S/N ratio.

1. The S/N introduced in the preceding section is used to refer to the ratio of signal power to noise power at the receiver output.This ratio is sometimes referred to s the post detector.
2. The S/N introduced in the preceding section is used to refer to the ratio of signal power to noise power at the receiver input. This ratio is sometimes referred to as the post detector.
3. Either a or b.
4. None of above

48. Define diplexer.

1. The transmit & receives signals are separated in a device known as diplexer.
2. The transmit & receives signals are separated in a device known as diplexer
3. Either a or b.
4. None of above

49. True anomaly?

1. The true anomaly is the angle from perigee to the satellite position, measured at the earths center.
2. The point longest from earth
3. The point closest approach to earth
4. None of the above

50. As on-line, real time data transmission system is most likely to require a connection that is

1. Time shared
2. Frequency shared
3. Simplex
4. Duplex

51. Primary component of uplink section of satellite is

1. transformer
2. transistor
3. earth station transmitter
4. power station transmitter

52. PCM system is used in satellite communications for transmission of

1. TV signal
2. Telegraph signal
3. Speech signal
4. All the above

53. A telephone communication link between two countries is established through a composite system using submarine cable and satellite when

1. Two countries are far apart
2. Political links between two countries have been severed
3. Two countiees are not facing common satellite
4. Two countries are not different continents

54. The frequency band used by most satellites is

1. UHF
2. VHF
3. SHF
4. EHF

55. What is application of satellite systems?

1. Whether forecasting
2. Terrestrial communication
3. point to point communication
4. None of the above