N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Physics, Part-II
PAPER-XVI
(Advanced Electronics)
Annual Examination, 2017
Time 3 Hours. Full Marks 80
Answer any Five Questions. All questions carry equal marks.
1. What is level translator circuit Why is it used with the cascaded differential amplifier.
2. What is an Op-Amp What are the characteristics of an ideal Op-Amp Draw the block diagram of Op-Amp.
3. What is logarithmic amplifier Show that in a logarithmic amplifier, output voltage changes as the
logarithm of the input voltage.
4. Define an oscillator. What is the principle of operation of an oscillator How are oscillators
classified
5. Convert the following Boolean expression to their schematic equivalents. Do not modify the
original expression A B C B C A and A A .
6. What is the difference between asynchronous and synchronous counters What is the
advantage of an asynchronous counter
7. What is encoder Discuss 4-bit priority encoder.
8. Explain the functioning of 'Successive-Approximation' ADC and 'Sigma-Delta' ADC.
[ADC Analog to Digital Converter].
9. Explain the architecture of 8086 microprocessor.
10. Describe basic hardware blocks of a computer.