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
Explanation:
Conceptual Question
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 \(10^{11}\) per \(\mathrm{m}^{3}\)
1 \(2MHz\)
2 \(10MHz\)
3 \(12MHz\)
4 \(18MHz\)
Explanation:
By using \(f_{c} \approx 9\left(N_{\max }\right)^{1 / 2} \Rightarrow f_{c} \approx 2 M H z\).
PHXII15:COMMUNICATION SYSTEMS
356856
The ground wave eventually disappears, as one moves away from the transmitter, because of
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
Explanation:
Conceptual Question
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 \(10^{11}\) per \(\mathrm{m}^{3}\)
1 \(2MHz\)
2 \(10MHz\)
3 \(12MHz\)
4 \(18MHz\)
Explanation:
By using \(f_{c} \approx 9\left(N_{\max }\right)^{1 / 2} \Rightarrow f_{c} \approx 2 M H z\).
PHXII15:COMMUNICATION SYSTEMS
356856
The ground wave eventually disappears, as one moves away from the transmitter, because of
NEET Test Series from KOTA - 10 Papers In MS WORD
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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
Explanation:
Conceptual Question
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 \(10^{11}\) per \(\mathrm{m}^{3}\)
1 \(2MHz\)
2 \(10MHz\)
3 \(12MHz\)
4 \(18MHz\)
Explanation:
By using \(f_{c} \approx 9\left(N_{\max }\right)^{1 / 2} \Rightarrow f_{c} \approx 2 M H z\).
PHXII15:COMMUNICATION SYSTEMS
356856
The ground wave eventually disappears, as one moves away from the transmitter, because of
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
Explanation:
Conceptual Question
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 \(10^{11}\) per \(\mathrm{m}^{3}\)
1 \(2MHz\)
2 \(10MHz\)
3 \(12MHz\)
4 \(18MHz\)
Explanation:
By using \(f_{c} \approx 9\left(N_{\max }\right)^{1 / 2} \Rightarrow f_{c} \approx 2 M H z\).
PHXII15:COMMUNICATION SYSTEMS
356856
The ground wave eventually disappears, as one moves away from the transmitter, because of