Total No. of Questions 09] [Total No. of Pages 1
M.Sc. (Previous) DEGREE EXAMINATION, MAY 2017
First Year
PHYSICS
Electronics
Time 3 Hours Maximum Marks 70
Answer any Five questions
All questions carry equal marks
Q1) Explain the concept of feedback in Op amps. Draw the circuit of Op amp
with negative feedback and explain its working.
Write down the applications of Op amps.
Q2) Draw the circuit of LC tunable oscillator and explain its working.
Discuss in detail about the principle and operation of Class B push pull power
amplifier.
Q3) Discuss in detail about the propagation of TEM waves in the coaxial line resonant
cavities.
Give a detailed account on the construction and operation of magnetron.
Q4) Discuss about the propagation of waves in free space.
Explain the basic principles of TV transmission and reception.
Q5) Discuss in detail about the working of A/D converter.
Explain the working of data selector with a neat illustration.
Q6) Construct a sequential logic 1 bit memory and explain its working.
Draw the block diagram and explain the operation of shift register.
Q7) Write down the addressing modes of Intel 8085 microprocessor.
Write an assembly language programme to find out the largest number in a given
series of 8 bit numbers.
Q8) Draw and explain the architecture of 8086 microprocessor.
Write down the arithmetic and logic instructions of 8086 microprocessor.
Q9) Write notes on any TWO of the following
Draw the block diagram of an IC regulated power supply and explain its
operation.
Give a brief account on ground wave and sky wave propagation with examples.
Explain the working of encoders and decoders in digital electronics.
Write an assembly language programme for multiplication of two 8 bit
numbers.