August
T05/TES044/EE/20150826
2015
Basic Electronics - 4
Instructions:
MARKS-80
Time: 3 Hrs
1. All questions are compulsory.
2. “Long Answer type Question (LAQ)” is a supply type
question of 15 marks which required a typical answer of about
60-80 lines in bout 32-40 minutes.
3. “Sort Answer type Question (SAQ)” is a supply type question
of 5 marks which required a typical answer of about 15-20 lines
in bout 08-10 minutes.
4. Figures to the right indicate marks allotted to the questions.
5. Assume suitable data if necessary
6. Use a nonprogrammable type of scientific calculator is
allowed
Marks
SECTION-A
Q.1 Differentiate inverting and Non-inverting amplifiers. Draw &
explain the subs actor. Draw & explain the adjustable inverter and
noninverter amplifier.
15
OR
Q.1 Draw & explain the circuit diagram for voltage to current converter
with an op-amp. Derive the expression for output & give
application of its. Explain virtual ground property of op-amp.
15
Q.2 B) Classify the op-amp filters on following basis:
1) Components used
2) Frequency range
3) Frequency response
4) Nature of pass-band and stop-band
5) Applications.
10
A)
Describe the operation of wide band-pass filter with the help
of circuit diagram & frequency response. State the need of all pass
filters.
5
OR
Q.2 Draw & explain second order low pass & high pass butter-worth
filter and write expression for cut off frequency. Draw the
frequency response curve for both.
15
Q.3 Draw & explain the block diagram of state-variable filter.
5
Q.4 What are the applications of negative feedback used in an
amplifier?
SECTION-B
5
Q.5 Draw & explain the diagram of basic & simple op-amp
differentiator circuit. draw input output waveform ,frequency
response & Derive the expression for it.
15
OR
Q.5 Define Schmitt trigger circuit; explain its operation with the help of
circuit diagram. Draw its input-output waveform, Vo versus V in
plot hysteresis voltage & discuss its importance.
15
Q.6 Define function generator. Draw the circuit diagram of simple
function generator using op-amp & explain its working with
transfer characteristics. List any five application of function
generator.
OR
15
Q.6 Draw and explain the operation of Quadrature oscillator. Draw
blocks diagram, waveform, pin diagram & explanation of voltagecontrolled oscillator.
15
Q.7 Define integrator and differentiator. What is the basic function of an
integrator?
5
Q.8 Describe with the help of block diagram the operation of FM
demodulator using PLL.
5
Computer Generated Random Question Paper dated: 16-07-2015 17:14:50
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