--- Content provided by FirstRanker.com ---
Subject Code: 2142405
BE - SEMESTER-IV(NEW) — EXAMINATION - SUMMER 2019
Subject Name: Analog Electronics and Its Applications
--- Content provided by FirstRanker.com ---
Time: 02:30 PM TO 05:00 PM
Instructions:
--- Content provided by FirstRanker.com ---
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
- Write only required answer. Avoid writing irrelevant and unnecessary too long answers.
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
Q.1 (a) Explain avalanche break down of P-N junction. [03]
(b) Draw input and output voltage and current waveforms of Centre tap full wave rectifier with capacitor filter. [04]
(c) Derive the equation of efficiency of Class-C amplifier. [07]
--- Content provided by FirstRanker.com ---
Q.2 (a) “The linear voltage regulator IC LM7805 works like a variable resistor.” Justify the statement. [04]
(b) Draw schematic diagram of shunt regulator using Zener diode. Explain working of the circuit. [07]
(c) Compare CE, CB, CC Configuration of BJT. [07]
--- Content provided by FirstRanker.com ---
OR
(c) Draw and explain the hybrid-pi model for a transistor connected in CE Configuration. [07]
Q.3 (a) Draw internal block diagram of op-amp. [03]
--- Content provided by FirstRanker.com ---
(b) Explain function of each block of above Q3(a) [04]
(c) Define following terms with reference to OPAMP: 1) Input offset voltage 2) Input bias current 3) PSRR 4) CMRR. Explain Common mode rejection ratio. [07]
--- Content provided by FirstRanker.com ---
OR
Q.3 (a) State protections required for input terminals of OPAMP. [03]
(b) State types of Analog to Digital Converters. [04]
--- Content provided by FirstRanker.com ---
(c) Explain gyrator circuit with neat diagram and mathematical equation. [07]
Q.4 (a) Draw internal block diagram of SE 555 IC. [03]
(b) Draw monostable multi vibrator using SE 555 IC. Decide component values for mono- shot with 0.1S pulse width. [04]
--- Content provided by FirstRanker.com ---
(c) Draw block diagram of V/F converter and explain the same. [07]
OR
--- Content provided by FirstRanker.com ---
Q.4 (a) What is a filter circuit? State types of filter circuit considering frequency response. [03]
(b) Explain phase shift oscillator. [04]
(c) Explain second order Butterworth Filter with neat diagram. [07]
--- Content provided by FirstRanker.com ---
Q.5 (a) What is DTL? Draw schematic diagram of AND gate using DTL. [03]
(b) State 5 names of logic families. [04]
(c) Draw schematic diagram of inverting amplifier using switched capacitor circuit. Explain its working. [07]
--- Content provided by FirstRanker.com ---
OR
Q.5 (a) State characteristics of ideal opamp. [03]
--- Content provided by FirstRanker.com ---
(b) An opamp circuit has closed loop gain of 10. It is working on +/- 12V DC power source. The input signal applied is x(t) = 5*sin(100*t). Draw input output waveform of the circuit. Explain output waveform. [04]
(c) Draw schematic diagram of Non-Inverting amplifier using OPAMP. Derive gain equation of the same. Comment on input impedance of this amplifier. [07]
Date: 13/05/2019
--- Content provided by FirstRanker.com ---
Total Marks: 70
This download link is referred from the post: GTU BE 2019 Summer Question Papers || Gujarat Technological University
--- Content provided by FirstRanker.com ---