Full Form of FM : Frequency Modulation

What is the full form of FM?

No:1. The full form of FM is Frequency Modulation.
No:2. FM is a method or technique of encoding details about a given analogue or digital signal by changing the frequency of the carrier wave according to the frequency of the modulating signal.
No:3. Modulating signal is same as a message which has to be transmitted to an electronic signal after being modified.
No:4. In Frequency Modulation, the carrier frequency signal is modified to the message signal, whereas the amplitude and phase and amplitude are maintained constant.

Few pieces of information about FM

No:1. FM established in 1930 by Edwin Armstrong, in the US
No:2. The radio wave is known as the carrier wave, but the phase and amplitude-phase continues to remain the same
No:3. Includes greater bandwidth and improved sound quality
No:4. The frequency range of FM is 88 – 108 MHz in the higher spectrum
No:5. Less susceptible to sound.

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Use of FM

No:1. FM is most often utilized in radio broadcasting.
No:2. FM provides a high benefit in radio transmission as it has a larger signal-to-noise ratio.
No:3. It means it results in minimal interference with radio frequencies.
No:4. It is the crucial reason that many radio stations use FM to broadcast music over the radio.

Advantages of FM

No:1. Less interference and sound.
No:2. Power consumption is less when it is being compare with Amplitude Modulation.
No:3. Guard bands separate adjacent FM channels.

Limitations of FM

No:1. The cost of machinery is high, and it has a wide bandwidth.
No:2. The receiving is a small FM signal.
No:3. For optimal interaction, the antennas must be keep close to FM systems.

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Que.-1. ग्रहों की खोज 1600 ई. में किनके द्वारा की गई?

(a) कॉपरनिकस

(b) केपलर

(c) एमडसेन

(d) रॉबर्ट पियरी

Ans : (b) केपलर

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(b) केपलर

(c) एमडसेन

(d) रॉबर्ट पियरी

Ans : (d) रॉबर्ट पियरी

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