Find the admittance Y_ab in the circuit seen in the figure. Express your answer in both polar and rectangular form. -j12.8 Ω HE j12 Ω :50 10 Ω a Yab b 13.6 Ω {60 -j252 452 Ω

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Q: = 3. A hybrid model amplifier is shown below. The parameters are h₁1 = 45ohms, h₂1 = 80, h₂2 12.5 us…

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Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.