GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
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Subject Code: 130902
GUJARAT TECHNOLOGICAL UNIVERSITY
Date: 22/11/2018
Subject Name: Analog And Digital Electronics
Time: 10:30 AM TO 01:00 PM
Instructions:
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)
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
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.4 (a) Explain with the truth table, the working of J-K flip flop. (07)
(b) What is a Multiplexer? Explain with diagram and truth table the operation of 4:1 Multiplexer. (07)
OR
Q.5 (a) With the help of neat circuit diagram explain the working of a two input TTL NAND gate. (07)
(b) With the help of neat circuit diagram explain the working of a two input CMOS NOR gate. (07)
OR
(b) Explain the working of Master-Slave J-K flip-flop (07)
OR
(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)
Total Marks: 70
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Subject Code: 130902
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-III (OLD) EXAMINATION — WINTER 2018Date: 22/11/2018
Subject Name: Analog And Digital Electronics
Time: 10:30 AM TO 01:00 PM
Instructions:
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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)
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(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
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(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
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(a) Explain inverting and non-inverting amplifier using Op-Amp. (07)Q.4 (a) Explain with the truth table, the working of J-K flip flop. (07)
(b) What is a Multiplexer? Explain with diagram and truth table the operation of 4:1 Multiplexer. (07)
OR
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(a) What is Decoder? Draw truth table and logic diagram of 3 to 8 line Decoder. Give difference between Decoder and Demultiplexer. (07)Q.5 (a) With the help of neat circuit diagram explain the working of a two input TTL NAND gate. (07)
(b) With the help of neat circuit diagram explain the working of a two input CMOS NOR gate. (07)
OR
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(a) What is the basic difference between synchronous and asynchronous counter? Explain 3-bit asynchronous up counter using T flip-flop. (07)(b) Explain the working of Master-Slave J-K flip-flop (07)
OR
(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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Total Marks: 70
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