Download GTU B.Tech 2020 Winter 4th Sem 3141002 Analog Circuit Design Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 4th Sem 3141002 Analog Circuit Design Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?IV (NEW) EXAMINATION ? WINTER 2020
Subject Code:3141002 Date:09/02/2021
Subject Name:Analog Circuit Design
Time:02:30 PM TO 04:30 PM Total Marks:56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Explain Barkhausen criterion for oscillation.
03

(b) Explain internal block diagram of OP-AMP
04

(c) Explain the basic differentiator using an op-amp. What are the problems
07
associated with this configuration? How they are overcome?


Q.2 (a) Explain operation of PLL with basic blocks and mention any four applications
03
of it in radio communication.

(b) Explain the working of a Square wave generator using op-amp
04

(c) Explain working of 555 timer based A-stable multivibrator.
07




Q.3 (a) Explain the concept of V to I converter with floating load.
03

(b) Explain inverting and non inverting amplifier using op-amp
04

(c) Analyze second order butterworth low Pass filter. Draw its frequency response
07
and state design procedure.




Q.4 (a) Explain the concept of virtual ground in op-amp.
03

(b) Explain absolute wave circuit.
04

(c) What is need of clipper circuit? Explain op-amp as a positive and negative
07
clipper along with necessary waveforms.



Q.5 (a) What is Voltage limiter circuit?
03

(b) Explain summing, scaling and averaging amplifier.
04

(c) Draw op-amp based wein bridge oscillator. Obtain frequency of oscillation and
07
discuss amplitude stabilization for same.



Q.6 (a) Explain peak detector circuit
03

(b) Explain differential amplifier using two op-amps
04

(c) Draw the hybrid common emitter transistor model. Also derive the
07
expression for transistor trans-conductance.



Q.7 (a) Discuss fixed and adjustable voltage regulator with necessary circuit diagrams.
03

(b) Explain the magnitude and phase response of low pass function of biquad
04
circuit.

(c) Derive the high frequency trance conductance equation for gm for CE
07
amplifier.



Q.8 (a) State the relation between hybrid- and h-parameters.
03
(b) Design RC phase oscillator for the frequency of 2 KHz.
04
(c) Derive high frequency current gain for CE amplifier with RS.
07
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