GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
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Subject Code: 3130305 Date: 30/11/2019
Subject Name: Advanced Electronics
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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MARKS
Q.1 (a) Enlist characteristics of Op-Amp. 03
(b) Explain Op-Amp 741 package Style & pin diagram. 04
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(c) Design amplifier circuits with following gain and draw output wave form for input Vin= +1 volt 07
Q.2 (a) Draw & Explain open loop inverting configuration of op-amp. 03
(b) Draw and explain V to I converter circuit. 04
(c) Design a circuit which can generate output voltage Vo = —2V1 + ½V2 Where V1 and V2 are the input voltage. 07
OR
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(c) Explain Basic Operation of SCR with necessary diagram. 07
Q.3 (a) Give colors of Op-Amp noise with its frequency content. 03
(b) Draw the circuit of the differentiator and its frequency response. 04
(c) Draw and explain integrator circuit. What is the problem of integrator circuit? How it can be solved? 07
OR
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Q.3 (a) Draw the circuit of Instrumentation amplifier. 03
(b) Justify “Transistor as a switch” 04
(c) Explain common base configuration of transistor with necessary equations. 07
Q.4 (a) Enlist type of Op-Amp noise. Explain any one type. 03
(b) Draw a circuit of wide band pass filter and its frequency response. 04
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(c) Design a low-pass filter at a cutoff frequency of 1 KHz with passband gain of 1 07
OR
Q.4 (a) Explain positive fixed voltage regulator IC. 03
(b) Draw a circuit of wien bridge oscillator. 04
(c) Explain 555 times as a monostable multivibrator. 07
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Q.5 (a) Explain basic operation of DIAC and TRIAC. 03
(b) Explain the basic structure, operation and breakover characteristics of schockley diode. 04
(c) Explain operation of Class A amplifier. 07
OR
Q.5 (a) Explain Passive RC high pass filter. 03
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(b) Explain the working of Electromagnetic relay with schematics. 04
(c) Design a phase shift oscillator for frequency 2KHz. 07
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