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SIGNAL AMPLIFICATION - A Review for Exams

This video is a compilation of questions on Signal Amplification Fundamentals that frequently appear in exams for Electrical Engineers. LIST OF QUESTIONS 00:00:00 Question 1 00:04:59 Question 2 00:18:31 Question 3 00:21:40 Question 4 00:33:07 Question 5 00:43:55 Question 6 00:57:03 Question 7 QUESTION HEADINGS QUESTION 1: The half-rectified sine wave of the figure is to be applied at the input terminals of an amplifier with an amplification factor or -2. Draw the output waveform. QUESTION 2: For the circuit of the figure, find the voltage fain, the current gain, and the power frequency. QUESTION 3: A certain amplifier operating with a 150Ω load has a voltage gain of 75 and a power gain of 8000. Determine the current gain and the input resistance. QUESTION 4: Determine the output voltage as a function of time and the power gain for the circuit below. QUESTION 5: Two amplifiers are cascaded. The first has a supply power of 2W, an input resistance of 1MΩ, and an input voltage of 2mV rms. The second has a power supply of 22W, a load resistance of 8Ω, and an output voltage of 12MV rms. Based on this information, determine the overall power gain, the dissipated power, and the efficiency. QUESTION 6: The figure depicts an amplifier composed of a cascade of 3 stages. Compute the overall gain, the current gain, and the power gain. QUESTION 7: For the circuit of the figure. a) Derive an expression for the amplifier voltage gain as a function of frequency, the DC gain and the 3db corner frequency. b) Calculate the values of the DC gain, the 3db frequency, and the frequency at which the gain becomes 0db. c) Find vo(t) for the input voltage vi(t) = 0.1 sin (100t) V =================== For more on Frequency Filters and Bode Plots watch this video    • FREQUENCY FILTERS AND RESONANCE - A Review...   =================== To contact me send message to my WhatsApp: +55 32 999 163 417 Para entrar em contato comigo envie mensagem para meu WhatsApp: +55 32 999 163 417