What is found in frequency modulation? a)Fixed frequency b)Fixed dimension c)Change in frequency and dimension d)Change in dimension onlyCorrect answer is option 'A'. Can you explain this answer?

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What is found in frequency modulation?

a)
Fixed frequency
b)
Fixed dimension
c)
Change in frequency and dimension
d)
Change in dimension only

Correct answer is option 'A'. Can you explain this answer?

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What is found in frequency modulation? a)Fixed frequency b)Fixed dimen...

Frequency modulation (FM) conveys information over a carrier wave by varying its instantaneous frequency. This contrasts with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant. Frequency modulation is also used in telemetry, radar, seismic prospecting and newborn EEG seizure monitoring.

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What is found in frequency modulation? a)Fixed frequency b)Fixed dimen...

Frequency modulation (FM) is a technique used in telecommunications and radio broadcasting to transmit information through changes in the frequency of a carrier wave. In FM, the frequency of the carrier wave is varied in accordance with the amplitude of the modulating signal.

Fixed Frequency:
In frequency modulation, the frequency of the carrier wave remains constant. The carrier wave is a high-frequency sinusoidal wave that acts as a carrier for the modulating signal. The frequency of this carrier wave is determined by the transmitter and remains fixed throughout the transmission process.

Change in Frequency and Dimension:
The modulating signal, which contains the information to be transmitted, is used to vary the frequency of the carrier wave. As the amplitude of the modulating signal changes, the frequency of the carrier wave also changes accordingly. This variation in frequency allows the transmission of the information in the form of frequency variations.

However, it is important to note that the dimension of the waveform does not change in frequency modulation. The dimension refers to the shape or form of the waveform, which remains constant. Only the frequency of the carrier wave is affected by the modulating signal.

Importance of Fixed Frequency:
Having a fixed frequency in frequency modulation is crucial for the proper demodulation of the signal at the receiving end. If the frequency of the carrier wave were to change during transmission, it would lead to distortion and loss of information. By keeping the carrier wave frequency fixed, the receiver can accurately demodulate the signal and retrieve the original information.

Conclusion:
In conclusion, frequency modulation involves the variation of the carrier wave frequency in accordance with the modulating signal. However, the frequency of the carrier wave remains fixed, and only the dimension of the waveform does not change. This fixed frequency is essential for maintaining the integrity of the transmitted information and ensuring accurate demodulation at the receiving end.

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