Master of Science -II (Physics-Materials Science)
Examination: Oct Nov 2016 Semester III (Old CGPA)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SH
550
Friday
18/11/2016
02:30 P.M
to
05:00 P.M
Instrumentation
C
X
Instructions: Q. no. 1 and Q. no 2 are compulsory.
Attempt any three questions from Q. No.3 to Q. No. 7.
All questions carry equal marks.
Use of non programmable calculators is allowed .
Total Marks: 70
Q.1 Objective questions: 14
Choose correct alternatives: 08
The most common transducer for shock and vibration measurement is
Dial gauge Ring type of load cell
LVDT Piezoelectric pick-up
LVDT works on the principle of
Variable resistance Variable inductance
Variable mutual inductance Variable capacitance
Which of the following is used to measure rotational speed
Tachogenerator LVDT
Pt-100 Strain gauge
pH is
partial pressure of hydrogen ion
hydrogen ion concentration
number of hydrogen ions
all of the above
The most desirable feature of Instrumentation amplifier is
High input impedance High CMRR
Low input impedance Low output impedance
Operational amplifiers are used for
Amplification Integration
Addition All of the above
DMM measures
Voltage Current
Resistance All of the above
If a sine wave of 5.00V peak voltage applied to RMS voltmeter, the meter
reading will be
3.54V 5.00V
7.07V 6.00V
Page 1 of 2
Fill in the blanks 06
The Hall effect transducer is used for
The sound is measured units
Lock-in amplifier is used for measuring and of the
signal.
Triangular wave can be obtained by integrating wave
An 8-bit ADC operated with 5.12V reference then the resolution of ADC is

Simple and hold circuits are is used along with
Q.2 Attempt the following. 14
Discuss the classification of transducers
Write a note on isolation amplifiers
Explain working of sine/square wave generator
Q.3 Discuss the principle and working of various types of opto-electric transducers. 10
Mention their application. 04
Q.4 With schematic diagram explain the construction and working of pH meter. 10
Describe the principle of frequency to voltage converter. 04
Q.5 With a neat schematic explain the working of Instrumentation amplifier.
Derive an equation for its output.
10
Describe the operation of peak detector. 04
Q.6 With neat block diagram explain the working of sampling oscilloscope.
Write a note on LCR meter.
Q.7 Describe the working of successive approximation type ADC with diagrams. 10
Discuss the applications of Virtual Instrumentation. 04