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 followingstatements is TRUE?Vcc= 9VRg = 800 KORc= 2.7 KOCcB=100VsRE = 0.3 KOCE RoRFigure 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 afeedback 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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Answered: Q.1 (a) Define the following terms used…

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Electrical Engineering

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

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.3P

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Concept explainers

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.

Question

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.

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