EX-305 RGPV B.Tech
Analog Electronics (AE)
Previous year papers and the official syllabus are free to read, no account needed.
Previous Year Papers
4 papers, latest Dec 2024
Syllabus, notes and important questions for EX-305
Syllabus units
Topics as the official RGPV syllabus lists them.
Unit 1 Semiconductor Diodes 4 topics
- Theory of P‑N junction, temperature dependence and breakdown characteristics
- Junction capacitances
- Zener diode, Varactor diode, Tunnel diode, PIN diode, LED, Photo diode, Schottky diode
- Diode applications: series–parallel configurations, full‑wave and half‑wave rectification, voltage multiplier circuits, diode testing
Unit 2 Transistors 5 topics
- BJT types and configurations, working principle, characteristics, and regions of operation
- Load line analysis and biasing methods
- Small‑signal analysis of transistor (low frequency) using h‑parameters, thermal runaway and thermal stability
- FET and MOSFET characteristics
- Transistor as an amplifier – gain, bandwidth, frequency response
Unit 3 Feedback Amplifier and Oscillators 4 topics
- Feedback amplifier concepts, negative feedback, voltage‑series, voltage‑shunt, current‑series and current‑shunt feedback
- Sinusoidal oscillators: L‑C (Hartley‑Colpitts) oscillators, RC phase‑shift, Wien bridge, crystal oscillators
- Power amplifiers: class A, class B, class AB, class C, their efficiency and power dissipation
- Push‑pull and complementary symmetry push‑pull amplifier configurations
Unit 4 Wave Shaping Circuits 6 topics
- Switching characteristics of diode and transistor: turn‑ON, turn‑OFF time, reverse recovery time, transistor as switch
- Multivibrators: bistable, monostable, astable
- Clipper and clamper circuits
- Differential amplifier – calculation of differential and common‑mode gain, CMRR using h‑parameters
- Darlington pair, boot‑strapping technique
- Cascade and cascade amplifier
Unit 5 Operational Amplifier 6 topics
- Operational amplifier fundamentals, practical op‑amp circuits and characteristics
- Slew rate, bandwidth, offset voltage, bias current
- Inverting, non‑inverting, voltage‑follower (buffer) amplifiers
- Summing, averaging, differentiator, integrator, differential, instrumentation, log and antilog amplifiers
- Voltage‑to‑current and current‑to‑voltage converters, comparators, Schmitt trigger
- Active filters, 555 timer and its applications
Exam insights
Counted from 4 past EX-305 papers.
Marks asked per paper, by unit
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Unit 1 Semiconductor Diodes 19 marks
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Unit 2 Transistors 32 marks
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Unit 3 Feedback amplifierand Oscillators 19 marks
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Unit 4 Wave Shaping circuits 19 marks
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Unit 5 Operational Amplifier 19 marks
Average marks of the questions from each unit in one paper. You answer only some of them, so the total is more than the paper’s maximum.
Asked again and again
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Explain the characteristics of an ideal Op-Amp, compare ideal vs practical Op-Amp, and give applications of Op-Amp circuits.
Asked 4 times: 2024, 2023, 2020, 2019
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Draw and explain the V-I characteristics of a P-N junction diode in forward and reverse bias, including working principle and applications.
Asked 4 times: 2024, 2020, 2019, 2018
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Describe feedback amplifier, concept of feedback, positive vs negative feedback, and effect/merits of negative feedback including gain
Asked 4 times: 2024, 2020, 2018