M.Sc. (Semester (CBCS) Examination Nov/Dec-2018
Electronics
INSTRUMENTATION DESIGN
Time: 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Use of Log table and calculator is allowed.
Draw neat and labeled diagram wherever necessary.
Figures to the right indicate full marks.
Q.1 Select correct alternatives for the following 14
In E-type thermocouple materials are used.
Chromel Constantan Copper Constantan
Iron/ Constantan All of these
A variable plate area transducer is made up of a fixed plate
Rotor Stator
Both a and b None of the mentioned
In LVDT, when core is moved to right, output voltage of transducer is

ES1>ES2 ES1<ES2
ES1=ES2 ES1≤ES2
Transducers operate under energy controlling principals.
Active Passive
Both a and b None of the mentioned
For monolithic processes the combination of IC and IC
are called IC 2B31.
IC 2B35 and IC 2B20 IC 2B35 and IC 2B31
IC 2B35 and IC 2B30 None of the mentioned
Dummy strain gauges are used for
Calibration of strain gauges
Compensation of temperature variations
Increasing bridge sensitivity
Decreasing bridge sensitivity
V to I converter with grounded load the op-amp connected in
mode.
Non-Inverting Inverting
Differential None of the mentioned
In CLC type of Liquid Crystal Display molecules are align.
Randomly Orderly
Both a and b None of the mentioned
An AC signal conditioning system is normally used for
Resistive transducers
Inductive and capacitive transducers
Piezoelectric transducers
All of these
10) Piezoelectric crystals are used for measurement of changes.
Static Dynamic
Static and dynamic All of these
11) Materials are used in RTD.
Platinum Copper
Nikel All of these
12) One of the variable is plotted is function of time is known as
Digital recorder Two variable recorder
Strip chart recorder Analog recorder
13) A load cell is an electro-mechanical device and used for measurement of

Static forces Dynamic forces
Both Static and dynamic forces None of the mentioned
14) Data acquisition system used for
Data processing Data conversion
Data transmission All of these
Q.2 Attempt any four of the following questions. 08
Explain difference between sensors and transducers.
What are the objectives of DAS?
Write a note on chopper amplifier.
Explain Piezo electric effect.
What is the difference between indicator and recorder?
Write a notes on. (Any Two) 06
Explain characteristics of 4-20mA current loop.
Explain the concept of Grounding and Shielding.
Write a note on Load cell.
Q.3 Answer any two of the following questions. 08
Write a note on model 289.
Explain static and dynamic characteristics of sensors.
Explain the techniques of measuring level of liquid.
Answer any one of the following questions. 06
Draw the block diagram of a generalized DAS and explain briefly.
Write a note on thermocouple amplifier.
Q.4 Answer any two of the following questions. 10
Explain construction and working principle of RDT
What is the need of display system in instrumentation? Explain LED.
Explain instrumentation amplifier. Draw block diagram of instrument
system.
Answer any one of the following questions 04
Explain in detail general block diagram of instrumentation design for
measurement.
Write a note on Hall Effect.
Q.5 Answer any two of the following questions. 14
Write a note on F to V converter.
Design instrumentation system for measurement of temperature.
Define the gauge factor of a resistance strain gauge and obtain the
expression for the same in terms of other constant.