Question:
AM is used for broadcasting because
AM is used for broadcasting because
Updated On: Jun 26, 2023
- it requires less transmitting power compared with other systems
- it is more noise immune than other modulation systems
- its use avoids receiver complexity
- no other modulation system can provide the necessary bandwidth faithful transmission
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The Correct Option is C
Approach Solution - 1
AM is used for broadcasting because its use avoids receiver complexity. Only a diode and a capacitor are sufficient to separate the audio signal from the AM wave.
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Approach Solution -2
AM, or amplitude modulation, is a technique for modulating a wave's amplitude.
We are frequently asked why the amplitude modulation technique is employed for broadcasting.
In the question, we are given four examples.
Let us consider the first case.
We chose AM because it is supposed to be more noise resistant than other modulating systems.
This is incorrect. Because, as compared to amplitude modulation, frequency modulation (FM) is far more noise resistant.
Hence, this case is wrong.
Let us consider the second case.
In this situation, AM is stated to be used because it requires less transmission power than other modulation methods.
Let us compare it once more to frequency modulation. We already know that FM uses less electricity to broadcast than AM.
Hence, this case is also wrong.
In the third example, amplitude modulation is stated to prevent complexity.
We know that the amplitude modulation circuit is simple when compared to the circuits of other modulations, such as frequency modulation. The circuit for frequency modulation is quite complicated.
The use of amplitude modulation (AM) eliminates complexity due to its simple circuit.
As a result, this example is correct.
Now let us consider the fourth case.
AM is stated to offer the appropriate bandwidths and faithful transmission in this scenario.
AM transmission is not reliable since AM may be manipulated digitally.
As a result, this scenario is likewise incorrect.
As a result, the only correct scenario is that amplitude modulation has a relatively basic circuit, and hence its usage reduces complexity.
Hence the correct answer is option C.
We are frequently asked why the amplitude modulation technique is employed for broadcasting.
In the question, we are given four examples.
Let us consider the first case.
We chose AM because it is supposed to be more noise resistant than other modulating systems.
This is incorrect. Because, as compared to amplitude modulation, frequency modulation (FM) is far more noise resistant.
Hence, this case is wrong.
Let us consider the second case.
In this situation, AM is stated to be used because it requires less transmission power than other modulation methods.
Let us compare it once more to frequency modulation. We already know that FM uses less electricity to broadcast than AM.
Hence, this case is also wrong.
In the third example, amplitude modulation is stated to prevent complexity.
We know that the amplitude modulation circuit is simple when compared to the circuits of other modulations, such as frequency modulation. The circuit for frequency modulation is quite complicated.
The use of amplitude modulation (AM) eliminates complexity due to its simple circuit.
As a result, this example is correct.
Now let us consider the fourth case.
AM is stated to offer the appropriate bandwidths and faithful transmission in this scenario.
AM transmission is not reliable since AM may be manipulated digitally.
As a result, this scenario is likewise incorrect.
As a result, the only correct scenario is that amplitude modulation has a relatively basic circuit, and hence its usage reduces complexity.
Hence the correct answer is option C.
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Approach Solution -3
AM, or amplitude modulation, is a technique for modulating a wave's amplitude.
We are frequently asked why the amplitude modulation technique is employed for broadcasting.
We chose AM because it is supposed to be more noise resistant than other modulating systems. This is incorrect. Because, as compared to amplitude modulation, frequency modulation (FM) is far more noise resistant.
Consider the second scenario.
In this situation, AM is stated to be used because it requires less transmission power than other modulation methods.
Let us compare it once more to frequency modulation. We already know that FM uses less electricity to broadcast than AM. As a result, this scenario is likewise incorrect.
In the third example, amplitude modulation is stated to prevent complexity.
We know that the amplitude modulation circuit is simple when compared to the circuits of other modulations, such as frequency modulation. The circuit for frequency modulation is quite complicated. The use of amplitude modulation (AM) eliminates complexity due to its simple circuit.
As a result, this example is correct.
We are frequently asked why the amplitude modulation technique is employed for broadcasting.
We chose AM because it is supposed to be more noise resistant than other modulating systems. This is incorrect. Because, as compared to amplitude modulation, frequency modulation (FM) is far more noise resistant.
Consider the second scenario.
In this situation, AM is stated to be used because it requires less transmission power than other modulation methods.
Let us compare it once more to frequency modulation. We already know that FM uses less electricity to broadcast than AM. As a result, this scenario is likewise incorrect.
In the third example, amplitude modulation is stated to prevent complexity.
We know that the amplitude modulation circuit is simple when compared to the circuits of other modulations, such as frequency modulation. The circuit for frequency modulation is quite complicated. The use of amplitude modulation (AM) eliminates complexity due to its simple circuit.
As a result, this example is correct.
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Concepts Used:
Communication Systems
A system that describes the information exchange between two points is called the communication system. The transmission and reception process of information is called communication. The major elements of communication are such as:
- The Transmitter of information
- Channel or medium of communication
- The Receiver of information
Examples Of Communication Systems:
The following are the examples of communication systems:
- Internet
- Public Switched Telephone network
- Intranet and Extranet
- Television
Types Of Communication Systems:
Turning on Signal specification or technology, the communication system is categorized as follows:
- Analog technology communicates data as electronic signals of differing frequencies or amplitude. For instance Broadcast and telephone transmission.
- In Digital technology, the data are created and processed in two states: High (represented as 1) and Low (represented as 0). Also this technology stores and transmits data in the form of 1's and 0's.
Elements of a Communication System:
