Download GTU BE/B.Tech 2018 Winter 5th Sem Old 151006 Applied Electronics Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (OLD) EXAMINATION - WINTER 2018

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Subject Code:151006 Date: 30/11/2018
Subject Name: Applied Electronics
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) What is regulated power supply? Draw and explain block diagram of SMPS. Also write advantage of SMPS. 07
(b) Draw the block diagram of an OP-AMP and explain the function of each block. 07

Q.2 (a) Draw and explain block diagram of IC 555. Also explain the Pin connection of IC 555. 07

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(b) Write short note on CRO. 07
OR
(b) Explain Ideal characteristics of operational amplifier. 07

Q.3 (a) Explain half adder and full adder circuit using logic diagram. 07
(b) Explain Astable multivibrator. 07

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OR
Q.3 (a) What is LVDT? Explain principle and operation of LVDT. Also list the advantage and application of LVDT. 07
(b) Explain monostable multivibrator. 07

Q4 (a) What is SCR? With required figure explain the operation and I-V characteristics of SCR. 07
(b) What is an optocoupler/optoisolator? Explain any one application of the same. 07

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OR
Q4 (a) Explain construction and working of UJT. Also explain UJT as relaxation oscillator. 07
(b) What is TRIAC? Draw and explain the construction of TRIAC? Also explain its operation. 07

Q.5 (a) What is sequential circuit? Explain any one sequential circuit with necessary circuit diagram in detail. 07
(b) Explain architecture of 8051 with block diagram. 07

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OR
Q.5 (a) Write short note on Photocopier machine. 07
(b) What is Bar Code Scanner? Draw and explain the operation of Bar Code Scanner with required figure. 07

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