Download GTU BE/B.Tech 2018 Winter 3rd Sem Old 130902 Analog And Digital Electronics Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 3rd Sem Old 130902 Analog And Digital Electronics Previous Question Paper

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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?III (OLD) EXAMINATION ? WINTER 2018
Subject Code:130902 Date:22/11/2018

Subject Name:Analog And Digital Electronics

Time:10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a)
Explain block diagram of Op-Amp with function of each block. What are the ideal
characteristics of an Op-Amp.
07
(b)
Why NAND gate and NOR gate are known as universal gate? Obtain AND, OR and
NOT gate using NAND and NOR gate.
07

Q.2 (a)
Draw functional block diagram of IC 555 & discuss function of each pin.
07
(b)
Enlist the applications of 555 timer in astable and monostable mode.
07
OR
(b)
Explain the working of IC 555 as a bistable multivibrator.
07

Q.3 (a)
Explain the working of Op-Amp as differentiator.
07
(b)
Explain with the truth table, the working of R-S flip flop.
07
OR
Q.3 (a)
Explain inverting and non-inverting amplifier using Op-Amp.
07
(b)
Explain with the truth table, the working of J-K flip flop.
07

Q.4

(a)
What is a Multiplexer? Explain with diagram and truth table the operation of 4:1
Multiplexer.
07
(b)
With the help of neat circuit diagram explain the working of a two input TTL NAND
gate.
07
OR
Q.4 (a)
What is Decoder? Draw truth table and logic diagram of 3 to 8 line Decoder. Give
difference between Decoder and Demultiplexer.

07
(b)
With the help of neat circuit diagram explain the working of a two input CMOS NOR
gate.
07

Q.5 (a)
What is the basic difference between synchronous and asynchronous counter? Explain
3-bit asynchronous up counter using T filp-flop.
07
(b)
Explain the working of Master-Slave J-K flip-flop
07
OR

Q.5 (a)
Give classification of registers. Discuss 4 ? bit buffer register using D ? flip flop.
07
(b)
Derive full adder with the help of necessary truth table, K-map. Also express in AOI
logic diagram.
07

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