Propagation of Waves in Atmosphere
PHXII15:COMMUNICATION SYSTEMS

356854 AM is used for broadcasting because

1 It is more noise immune than other modulating systems
2 It requires less transmitting power compared with other systems
3 Its use avoids receiver complexity (or) It is simple to demodulate
4 No other modulation system can provide the necessary bandwidth, faithful transmission
PHXII15:COMMUNICATION SYSTEMS

356855 In short wave communication waves of which of the following frequencies will be reflected back by the ionospheric layer, having electron density 1011 per m3

1 2MHz
2 10MHz
3 12MHz
4 18MHz
PHXII15:COMMUNICATION SYSTEMS

356856 The ground wave eventually disappears, as one moves away from the transmitter, because of

1 Interference from the sky wave
2 Loss of line of signal condition
3 Maximum single - hop distance limitation
4 Difdfraction effect causing tilting of the wave
PHXII15:COMMUNICATION SYSTEMS

356854 AM is used for broadcasting because

1 It is more noise immune than other modulating systems
2 It requires less transmitting power compared with other systems
3 Its use avoids receiver complexity (or) It is simple to demodulate
4 No other modulation system can provide the necessary bandwidth, faithful transmission
PHXII15:COMMUNICATION SYSTEMS

356855 In short wave communication waves of which of the following frequencies will be reflected back by the ionospheric layer, having electron density 1011 per m3

1 2MHz
2 10MHz
3 12MHz
4 18MHz
PHXII15:COMMUNICATION SYSTEMS

356856 The ground wave eventually disappears, as one moves away from the transmitter, because of

1 Interference from the sky wave
2 Loss of line of signal condition
3 Maximum single - hop distance limitation
4 Difdfraction effect causing tilting of the wave
PHXII15:COMMUNICATION SYSTEMS

356857 Broadcasting antennas are generally

1 Omnidirectional type
2 Vertical type
3 Horizontal type
4 None of these
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII15:COMMUNICATION SYSTEMS

356854 AM is used for broadcasting because

1 It is more noise immune than other modulating systems
2 It requires less transmitting power compared with other systems
3 Its use avoids receiver complexity (or) It is simple to demodulate
4 No other modulation system can provide the necessary bandwidth, faithful transmission
PHXII15:COMMUNICATION SYSTEMS

356855 In short wave communication waves of which of the following frequencies will be reflected back by the ionospheric layer, having electron density 1011 per m3

1 2MHz
2 10MHz
3 12MHz
4 18MHz
PHXII15:COMMUNICATION SYSTEMS

356856 The ground wave eventually disappears, as one moves away from the transmitter, because of

1 Interference from the sky wave
2 Loss of line of signal condition
3 Maximum single - hop distance limitation
4 Difdfraction effect causing tilting of the wave
PHXII15:COMMUNICATION SYSTEMS

356857 Broadcasting antennas are generally

1 Omnidirectional type
2 Vertical type
3 Horizontal type
4 None of these
PHXII15:COMMUNICATION SYSTEMS

356854 AM is used for broadcasting because

1 It is more noise immune than other modulating systems
2 It requires less transmitting power compared with other systems
3 Its use avoids receiver complexity (or) It is simple to demodulate
4 No other modulation system can provide the necessary bandwidth, faithful transmission
PHXII15:COMMUNICATION SYSTEMS

356855 In short wave communication waves of which of the following frequencies will be reflected back by the ionospheric layer, having electron density 1011 per m3

1 2MHz
2 10MHz
3 12MHz
4 18MHz
PHXII15:COMMUNICATION SYSTEMS

356856 The ground wave eventually disappears, as one moves away from the transmitter, because of

1 Interference from the sky wave
2 Loss of line of signal condition
3 Maximum single - hop distance limitation
4 Difdfraction effect causing tilting of the wave
PHXII15:COMMUNICATION SYSTEMS

356857 Broadcasting antennas are generally

1 Omnidirectional type
2 Vertical type
3 Horizontal type
4 None of these