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Previous Year Exam Questions for Advanced Electronic Circuits - AEC of 2017 - bput by Verified Writer

  • Advanced Electronic Circuits - AEC
  • 2017
  • PYQ
  • Biju Patnaik University of Technology BPUT - BPUT
  • Electrical and Electronics Engineering
  • B.Tech
  • 441 Views
  • 17 Offline Downloads
  • Uploaded 1 year ago
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Registration No : Total Number of Pages: 02 B.Tech PEEC4301 5th Semester Back Examination 2017-18 Advanced Electronic Circuits BRANCH: AEIE, ECE, EEE, EIE, ETC Time: 3 Hours Max Marks: 70 Q.CODE: B365 Answer Question No.1 which is compulsory and any five from the rest. The figures in the right hand margin indicate marks. Q1 a) b) c) d) e) f) g) h) i) j) Q2 a) b) Q3 a) b) Answer the following questions: What are the advantages of active filter over passive filter? What is order of a filter? Draw a first order low pass filter circuit. Draw and write the expressions of Av and fc for different first order high pass stages. How can an inverting or a noninverting comparator be used as a sine wave to square wave converter? What do you mean by stable states of a binary? Draw the circuit diagram of a direct connected binary and what are the advantages of it? Define an oscillator. What are the two conditions for oscillation? State the methods of generating a time-base wave form and its applications. Draw the block diagram of the phase locked loop. What is the role of VCO here? List important features of IC 555 timer. (2 x 10) Draw the circuit of a first order low pass active filter and its frequency response. Obtain the gain magnitude and phase angle equation and verify its operation. State the steps involved in the design of a LPF. Draw the block diagram of a voltage controlled oscillator and explain its working principle and applications. (5) What are the different types of oscillators available? Define frequency stability. What are the factors that determine the frequency stability of an oscillator? Draw the circuit of an op-amp saw-tooth wave generator and explain its working with output waveforms. What is the difference between a saw-tooth and a triangular waveform? Draw and explain the operation of inverting and noninverting comparators. How can these be used as sine wave to square wave converter. (5) (5) (5) Q4 a) b) Draw and explain the role of commutating capacitors in a binary. Draw and explain the principle of operation of Schmitt trigger circuit using transistors. Write its two applications (5) (5) Q5 a) b) Explain the monostable, astableoperation of a tunnel diode circuit. Describe the symmetrical triggering mechanism for a bistablemultivibrator with suitable diagram. (5) (5) Q6 a) With circuit diagram and necessary waveforms explain the operation of collector-coupled monostablemultivibrator. Explain the operation of a transistor bootstrap time base generator circuit with applications. (5) b) (5)

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Q7 a) b) Explain the operating principles of a PLL with the help of a block diagram. State the application of PLL. Explain the operation of IC 555 timer circuit and its applications. a) b) c) d) Write short notes on : Sawtooth wave generator using UJT Voltage Controlled Oscillator. Transient response of transistor amplifier. Relaxation oscillator Q8 (5) (5) (5 x 2)

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