Master of Science I (Material Science)
Examination: Oct Nov 2016 Semester I (New CBCS)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SH
534
Monday
21/11/2016
10:30 AM
to
01:00 PM
Analog and Digital
Electronics
C
HCT 1.3
Instructions: Q.No.1 and 2 are compulsory.
Answer any three questions from Q.No.3 to Q.No.7.
Figures to the right indicates full marks.
Total Marks: 70
Q.1 Choose the correct alternative: 08
A differential amplifier, amplifies
And mathematically differentiates the average of the voltages on the
two input lines
And differentiates the input waveform on one line when the other line
is grounded
The difference of voltages between the two input lines.
And differentiates the sum of the two input waveforms.
The large signal bandwidth of an opamp is limited by its
Loop gain Slew rate
Output impedance Input frequency
A bistable multivibrator is a
Free running oscillator Triggered oscillator
Saw tooth wave generator Crystal oscillator
A minterm of the Boolean function, is
y z x y
x z x
The open- loop gain of an op- amp available in the market may be around.
10-1 10
105 102
When an instruction is read from the memory, it is called
Memory Read cycle Fetch cycle
Instruction cycle Memory write cycle
State whether following statements are True or False Fill in the blanks: 08
A virtual ground is a ground for voltage but not for current. (True False)
A bistable multivibrator is a Crystal oscillator. (True False)
An instrumentation amplifier should not have a high CMRR (True False)
A 32 to 1 multiplexer has 32 inputs, one output and 5 control signals.(True
False)
The large signal bandwidth of an opamp is limited by its
Page 1 of 2
Wien bridge oscillator can typically generate frequencies in the range of

A demultiplexer can be used as
In 8085 accumulator has bits.
Q.2 Write short notes on 14
With a neat diagram explain the significance of virtual ground in an
operational amplifier.
05
Define the term slew rate, input offiset voltage, input bias current and input
offset current.
05
Delineate the concept of 'duality' in Boolean algebra. 04
Q.3 Long answer questions. 14
Draw a neat circuit of a differential amplifier and explain its operation. 08
Write the typical values of the following parameters with respect to 741 C
OpAmp;
Input Offset Voltage
ii) CMRR
iii) SVRR
iv) Output Resistance
Power Consumption
vi) Slew Rate
06
Q.4 Draw the circuit of Monostable Multivibrator using OP-AMP and derive an
expression for the time period "T".
08
With A neat diagram explain Op-Amp as a Instrumentation Amplifier and
write the important features of an Instrumentation Amplifier.
06
Q.5 Draw the circuit of Integrator using Op-Amp and derive an expression for its
output voltage.
08
Write the limitations of three terminal voltage regulators and explain the 723
general purpose voltage regulators with diagram.
06
Q.6 What is a digital multiplexer? Illustrate its functional diagram. Write the
scheme of a 4-input multiplexer using basic gates (AND/OR/NOT) and
explain its operation.
08
Simplify the following. 06
Q.7 What is addressing modes? Explain the addressing modes of 8085 examples. 08
How data transfer instructions are used in case of 8085? 06