An audio signal of 15 kHz frequency cannot be transmitted over long distance without modulation because.

An audio signal of 15 kHz frequency cannot be transmitted over long distances without modulation because

Assertion. Audio signal of frequencuy 10 KHz cannot be transmitted over long distance without modulation. Reason. Length of the antenna required lambda//4 . Should have practical value.

Assertion. Audio signal of frequencuy 10 KHz cannot be transmitted over long distance without modulation. Reason. Length of the antenna required lambda//4 . Should have practical value.

Messages cannot be transmitted over long distance in _______ transmission.

As radio waves of low frequencies cannot be transmitted to long distances, a high frequency carrier signal is superposed on it. This process is called

As radio waves of low frequencies cannot be transmitted to long distances, a high frequency carrier signal is superposed on it.This process is called—

Modulation is the phenomenon of superimposing the low audio frequency base band message or information signals ( called the modulation signals) on a high frequency wave (called, the carrier wave). The resultant wave is called the modulated wave, which is transmitted. Read the above passage and answer the following questions: (i) What are the Audio Frequency and Radio Frequency ranges? (ii) Why audio frequency signals, as such cannot be transmitted over long distance? (iii) What does the phenomemom imply in day to day life ?

(A): Low frequency audio signals can not be transmitted directly over long distances (B) : To transmit low frequency audio signals over long distances, the audio signals are super imposed on a high frequency carrier signal