DISTANCE EDUCATION
M.Sc. (Physics) DEGREE EXAMINATION, MAY 2016.
INTEGRATED AND DIGITAL ELECTRONICS
(2008 onwards)
Time Three hours Maximum 100 marks
Answer any FIVE questions.
Each question carries 20 marks.
20 100)
1. Explain the working of transformer coupled Audio
power amplifier, with a neat sketch and get an
expression for its efficiency and gain.
Describe the working of class power amplifier
with a circuit and find an expression for the
efficiency of the amplifier.
Write a note on transistor biasing.
2. What are FET parameters? Obtain the relation
connecting them.
Describe an experiment to draw the FET
characteristic curves. Show how FET parameters
could be determined from this.
Draw the circuit diagram of an Inverting and
Non-inverting amplifier and explain its operation.
Derive an expression for its voltage gain.
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3. What are active filters? Explain low pass filter and
high pass filter with a suitable diagram.
Draw the OP-AMP circuit of a current to voltage
converter. Explain its operation. Mention its uses.(8)
Mention few applications of a counter.
4. Minimise the following function f using
K-Map f
Prove using K-Map
AC D ABD ACD
Explain by giving the block diagram the
construction and operation of
serial-in; parallel out shift register.
parallel-in; parallel out shift register.
Using Boolen algebra, verify that
AB AB .
5. Discuss the operation of a J-K master/slave flip-flop
with necessary circuit and truth table.
Write and explain the Boolean expression for OR,
NOR, AND, NAND and NOT circuits.
Explain the operation of a low pass filter using
OP-AMP.
6. With suitable examples, explain 8085 addressing
modes in detail.
Write a short note on conditional flags in 8085.
What is the function of an interrupt and list out the
'maskable' and 'non-maskable' interrupts available
in 8085.
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7. Explain the architecture of 8085 with a block
diagram in detail.
Explain CALL RET, PUSH and POP instructions
in detail.
Draw and explain the timing diagram of OP code
fetch cycle.
8. Explain the technology involved in the fabrication of
solar cells.
Explain CMRR.
Describe the working of solar cell and discuss its I-V
characteristics.