Download GTU BE/B.Tech 2019 Winter 3rd Sem New 3130907 Analog And Digital Electronics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 3130907 Analog And Digital Electronics Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3130907 Date: 30/11/2019

Subject Name: Analog & Digital 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) What is ideal differential amplifier? 03
(b) Design half adder circuit. 04
(c) Compare different types of power amplifiers. 07

Q.2 (a) Calculate maximum frequency for a sine wave, output voltage of
12 V peak with an OPAMP having slew rate 1 V/?S.
03
(b) Prove that voltage follower has unity gain. 04
(c) Draw integrator circuit with example of input and output
waveforms. Derive expression for output voltage.
07
OR
(c) Write short note on Wien bridge oscillator using OPAMP. 07
Q.3 (a) Explain zero crossing detector. 03
(b) Explain how to generate triangular wave using OPAMP. 04
(c) Explain first order Butterworth low-pass filter. Derive expression
of filter gain.
07
OR
Q.3 (a) Explain window comparator. 03
(b) Draw Schmitt trigger circuit. Plot input and output waveforms. 04
(c) Explain positive peak detector circuit using OPAMP. 07
Q.4 (a) What is multiplexer? 03
(b) Classify digital logic gates. Draw truth table and symbols of basic
logic gates.
04
(c) Design a combinational circuit which has 3 bit binary input and
has output as square of inputs.
07
OR
Q.4 (a) Design full adder circuit. 03
(b) Describe POS and SOP with example. 04
(c) Explain in detail 7 segment LED display. 07
Q.5 (a) Explain digital to analog converter with binary weighted resisters. 03
(b) Explain positive edge triggered JK flip-flop. 04
(c) Explain 4 bit ring counter using waveforms. 07
OR

Q.5 (a) What are preset and clear inputs with flip-flops? Why are they
provided?
03
(b) Explain master slave JK flop-flop. 04
(c) Design a 4 bit synchronous up counter. 07

****************
FirstRanker.com - FirstRanker's Choice