Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem New 2140305 Analog Circuits Ii Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (NEW) EXAMINATION ? WINTER 2018
Subject Code:2140305 Date:01/12/2018
Subject Name:Analog Circuits-II
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 an isolation amplifier? Enlist the types of isolation amplifier. 03
(b) Enlist the various problems associated with power supplies. 04
(c) Explain the difference between switch mode power supply and linear
power supply.
07
Q.2 (a) Define: Capacitive Crosstalk. 03
(b) Explain the Opto-Isolators with the help of diagram. 04
(c) Explain the effect of electro-magnetic coupling on circuits. 07
OR
(c) Discuss the common grounding rules for circuit design. 07
Q.3 (a) A 100 k? resistor at 25C (298 K) over the frequency range of 50 Hz to
10 kHz. Calculate the thermal noise.
03
(b) Explain the working of chopper stabilized amplifier in detail. 04
(c) Enlist the types of noises. Explain any two noise in detail. 07
OR
Q.3 (a) Give the importance of heat sink. What are the main criteria for selection
of heat sink?
03
(b) Write a technical note on White noise. 04
(c) Design an instrumentation amplifier of gain 10. Also draw the response
when V1 = 1V, V2 = 2V, VCC/VEE = 5V.
07
Q.4 (a) What do you mean by filters? Draw the frequency response of low pass
active filters.
03
(b) Enlist the types of Amplitude Modulation. Explain Square Law
modulator in detail.
04
(c) Design 2
nd
Order Low Pass Filter at a high cut off frequency of 1 kHz.
Also draw the frequency response.
07
OR
Q.4 (a) What are the advantages of modulation techniques? 03
(b) What do you mean by frequency modulation? Also write down the
mathematical representation of frequency modulation.
04
(c) Design a 50 Hz active notch filter. Also draw the frequency response. 07
Q.5 (a) Define: Noise corner frequency 03
(b) Enlist the safety standards in medical electronic amplifier. 04
(c) Explain the amplitude modulation receiver with the help of block
diagram.
07
OR
Q.5 (a) Enlist the main components of CRO. 03
(b) How does a frequency analyzer work? Explain with the help of diagram. 04
(c) Explain the comparison between PAM, PWM, PPM. 07
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This post was last modified on 20 February 2020