Download GTU BE/B.Tech 2019 Winter 3rd Sem New 2130902 Analog Electronics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 2130902 Analog Electronics Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 2130902 Date: 30/11/2019

Subject Name: Analog Electronics
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.



MARKS

Q.1 (a)
Explain the following terms. (1) PSRR (2) Input bias current (3) Input offset
Voltage
03
(b)
Draw the circuit diagram of class B push-pull amplifier & explain its
working.
04
(c) List and discuss all ideal characteristics of an Op-Amp. 07
Q.2 (a) What are the merits and demerits of hybrid parameters? 03
(b) Write a short note on cross over distortion. 04
(c) Explain the working of summing amplifier and averaging amplifier
when connected in Inverting mode.
07
OR
(c) Draw the circuit Op-Amp as a Integrator and explain with necessary
waveforms.
07
Q.3 (a) How to rectify stability and high frequency noise problem in a basic
differentiator?
03
(b) Explain the operation of Zero crossing detector. 04
(c) Draw and explain Wien Bridge Oscillator. 07
OR
Q.3 (a) Compare the inverting and non-inverting comparators. 03
(b) With the help of circuit diagram explain the working of Schmitt
Trigger.
04
(c) With the help of circuit diagram explain voltage to current convertor
with it?s application.
07
Q.4 (a) Define : 1)Pass band 2)Cut of frequency 3)Attenuation 03
(b) Derive the out put voltage equation of basic differentiator. 04
(c) Explain with circuit diagram the operation of VCO. 07
OR
Q.4 (a) Compare Active Filter and Passive Filter. 03
(b) Compare Astable , Monostable and Bistable Multivibrator 04
(c)
Draw and explain basic block schematic of 79XX series tree terminal voltage
regulator ICs.
07
Q.5 (a)
Explain Butterworth response
03
(b) List advantages and disadvantages of adjustable voltage regulators. 04
(c) Explain the working of IC 555 as a Astable Multivibrator. 07
OR

Q.5 (a)
What is the effect of negative feedback on gain & bandwidth?
03
(b) Describe the operation of a LM 317 voltage regulator. 04
(c) Explain the working of PLL using appropriate block diagram 07

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