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Q.1 (a) Define the following terms used in negative feedback amplifiers: (i) series mixing, (ii) output loading.

Q.1 (a) Define the following terms used in negative feedback amplifiers: (i) series mixing, (ii) output loading.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Electrical Engineering - Electronic ll Please solve the question quickly
Q.1 (a) Define the following terms used in negative feedback amplifiers: (i) series mixing, (ii) output loading. (b) If CE is disconnected from the circuit given in Figure Q1(b), which one of the following statements is TRUE? Vcc= 9V Rg = 800 KO Rc= 2.7 KO Cc B=100 Vs RE = 0.3 KO CE Ro R Figure Q1(b) (i) The input resistance Ri decreases and the magnitude of voltage gain Av increases. (ii) Both input resistance Ri and the magnitude of voltage gain Av decrease. (iii) Both input resistance Ri and the magnitude of voltage gain Av increase. (iv) The input resistance Ri increases and the magnitude of voltage gain Av decreases. (c) An amplifier has an open-loop gain A, = 50 dB. A negative feedback of 1 is applied. rind (i) the voltage gain with feedback, and (ii) the value of feedback factor. (d) In an amplifier with negative feedback, the gain of the basic amplifier is 40 dB and it employs a feedback factor of 0.01. If the input signal is 10 mV, determine (i) voltage gain with feedback, and (ii) value of output voltage.
Transcribed Image Text:Q.1 (a) Define the following terms used in negative feedback amplifiers: (i) series mixing, (ii) output loading. (b) If CE is disconnected from the circuit given in Figure Q1(b), which one of the following statements is TRUE? Vcc= 9V Rg = 800 KO Rc= 2.7 KO Cc B=100 Vs RE = 0.3 KO CE Ro R Figure Q1(b) (i) The input resistance Ri decreases and the magnitude of voltage gain Av increases. (ii) Both input resistance Ri and the magnitude of voltage gain Av decrease. (iii) Both input resistance Ri and the magnitude of voltage gain Av increase. (iv) The input resistance Ri increases and the magnitude of voltage gain Av decreases. (c) An amplifier has an open-loop gain A, = 50 dB. A negative feedback of 1 is applied. rind (i) the voltage gain with feedback, and (ii) the value of feedback factor. (d) In an amplifier with negative feedback, the gain of the basic amplifier is 40 dB and it employs a feedback factor of 0.01. If the input signal is 10 mV, determine (i) voltage gain with feedback, and (ii) value of output voltage.
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