B.TECH - Semester 3 electronics devices and circuits Question Paper 2020 (may)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- Explain the need for biasing.
- Draw the frequency response curve of an RC coupled amplifier.
- Explain Barkhausen criterion for oscillation.
- Derive the condition for an RC circuit to behave as a differentiator.
- Draw the circuit diagram and transfer characteristics of a slicer circuit.
- Compare the performance of series and shunt regulators.
- Explain the ideal characteristics of an operational amplifier.
- What is crossover distortion?
- Explain the principle of photo voltaic cell.
- Explain the term body effect. Answer one full question. Each question carries 20 marks.
- (a) Explain with circuit diagram an RC coupled amplifier and effect of various components.
- (b) Derive the equation for frequency of oscillation for an RC phase shift oscillator.
- (a) Discuss the frequency response curve of an RC coupled amplifier.
- (b) Derive the equation for frequency of oscillation for a Hartley oscillator.
- (a) Draw the functional block diagram of NE555 and explain its working.
- (b) Explain the working of clamping circuit with necessary waveforms.
- (a) Explain with block diagram working principle of a switch mode power supply.
- (b) With circuit diagram explain the working of an integrator and draw the output waveform subjected to a square wave input.
- (a) Explain the working of a Class B push pull amplifier. What are its advantages?
- (b) Explain the working of following circuits using opamp with necessary diagrams:
- (i) Summing amplifier (ii) Precision rectifier.
- (a) Using simulated inductance approach realize a notch filter and explain its working.
- (b) Explain the working of an astable multivibrator with necessary figures using opamps.
- (a) Write short notes on :
- (i) Photo transistor (ii) Solar cell.
- (b) Distinguish the basic principle of enhancement and depletion MOSFET
- (a) Explain the working of a TFT display with figure.
- (b) Explain the working of CMOS amplifier.