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, 2016
Time 3 Hours. Full Marks 80
Answer any Five Questions.
All questions carry equal marks.
1. Describe DC Equivalent circuit and AC Equivalent circuit of a dual-input, balanced output
differential amplifier.
2. What is a multiplexer Draw the logic circuit for a 4-to-1 multiplexer. Write the Boolean
equation and describe the truth table.
3. How can op-amp be used as a voltage-to-current and current-to-voltage converters What
is a logarithmic amplifer
4. What is a decoder Describe seven segment displays for an LED circuit.
5. What is Read Only Memory Distinguish between PROM and EPROM. Give some of
the important applications of ROM.
6. What is an encoder Draw the logic circuit of 8-time-to-3 time encoder.
7. What is flip-flop Explain the functioning of NOR and NAND latch.
8. What is a comparator Explain the working of a comparator. What are its important
characteristics
9. Derive an expression for frequency of oscillation of phase shift oscillator. Following
specifications are given for a particular phase shift oscillator C
R . Determine the frequency of oscillation.
10. Explain the architecture of 8086 microprocessor.