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

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 5th Sem Old 151006 Applied Electronics Previous Question Paper

www.FirstRanker.com
1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?V (OLD) EXAMINATION ? WINTER 2018
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.

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
(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
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

Q.4 (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
OR
Q.4 (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
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

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