EI2252 Transducer Engineering B.E Model Question Paper : srmeaswari.ac.in

Name of the College : Easwari Engineering College
University : Anna University
Subject Code/Name : EI 2252 — Transducer Engineering
Dept : Electronics and Instrumentation Engineering
Degree : B.E
Year : APRIL/MAY 2011
Year/SEM: II/IV
Website : srmeaswari.ac.in
Document Type : Model Question Paper

Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/srmeaswari.ac.in/3309-fourthem1.pdf

SRM Easwari Transducer Engineering Question Paper

(Common to Instrumentation and Control Engineering)
(Regulation 2008)
Time : Three hours
Maximum : 100 marks

Related : Easwari Engineering College EI2352 Process Control B.E Model Question Paper : www.pdfquestion.in/3315.html

Answer ALL questions :
PART A — (10 × 2 = 20 marks)
1. Explain primary transducer and secondary transducer with an example.
2. Define odds.
3. Define resolution and sensitivity.
4. Draw the time response of a first-order instrument to a unit impulse signal.
5. Explain the working principle of constant-current hot-wire anemometer.
6. Draw any two potentiometer circuits used for displacement measurement.
7. Explain the working of a variable reluctance transducer.
8. What is meant by pt-100?
9. Write any two applications of smart sensors.
10. What is meant by MEMS?

PART B — (5 × 16 = 80 marks)
11. (a) (i) Explain what is meant by active transducer and passive transducer with an example. (6)
(ii) Explain the functional blocks of a measurement system with neat diagram. (10)
Or
(b) (i) Discuss :
(1) Observational error and
(2) Random error. (6)
(ii) The following values were obtained from the measurement of current : (10)
12.35 A, 12.71 A, 12.48 A, 10.24 A, 12.63 A and 12.58 A.
Calculate :
(1) The arithmetic mean
(2) The average deviation
(3) The standard deviation
(4) Variance.
12. (a) (i) Obtain the ramp response of a first order instrument. (8)
(ii) Explain the frequency response of a first order instrument. (8)
Or
(b) (i) Derive the operational transfer function of a second-order instrument. (8)
(ii) Obtain the step response of a second-order instrument. (8)
13. (a) (i) Describe the construction of LVDT and explain its operation with the aid of a diagram. (10)
(ii) List the advantages, disadvantages and applications of LVDT. (6)
Or
(b) (i) Explain variable distance type and variable area type capacitive transducers and give their applications. (10)
(ii) Write a brief note on capacitor microphone. (6)
304 304 304
3 11329
14. (a) (i) Define – Gauge factor. Derive its expression. (12)
(ii) List the different types of strain gauges and their applications. (4)
Or
(b) (i) Describe the RTD and explain, how it can be used to measure temperature. (10)
(ii) Discuss about the construction of thermistor and its resistancetemperature characteristics.
15. (a) (i) Define piezo-electric effect. Explain how a piezo-electric crystal is used for the measurement of force with necessary derivations. (12)
(ii) Brief out the operation of a Half-Effect transducer. (4)
Or
(b) (i) Explain the working and V-I characteristics of a photodiode and phototransistor. (8)
(ii) Explain how a fibre optic sensor work and list out its advantages. (8)

Analytical Instruments

Answer ALL questions :
PART A — (10 × 2 = 20 marks)
1. State Beer-Lambert’s law.
2. What are the advantages of double beam spectrophotometer?
3. Define Thin Layer Chromatography.
4. What is meant by column packing in chromatography?
5. Write the principle of a smoke meter.
6. Mention the uses of IR analyzer.
7. What are called bio-sensors?
8. Give the principle of pH measurement.
9. What is the advantage of electron spin Resonance Spectroscopy?
10. Write down the principle of Mass Spectrometry.

PART B — (5 × 16 = 80 marks)
11. (a) With a schematic diagram, explain the Atomic absorption spectroscopy.
Or
(b) With a neat instrumentation setup, explain the visible spectrophotometer.
12. (a) (i) With the necessary diagram, explain the adsorption chromatography techniques. (12)
(ii) List the various detectors used for this purpose. (4)
Or
(b) (i) With a neat schematic diagram, discuss the separation principle of HPLC (High Pressure Liquid Chromatography). (12)
(ii) Enumerate the applications of HPLC. (4)
13. (a) (i) With a suitable diagram, explain the construction and working of oxygen analyzer. (10)
(ii) Discuss the method of analysis based on ionization of gases. (6)
Or
(b) (i) With necessary diagram, explain the working principle of thermal conductivity analyzer. (8)
(ii) With neat instrumentation setup, explain any one method to estimate sulphur-di-oxide present in air. (8)
14. (a) Discuss, how pH of a solution is measured using glass electrode and reference electrode with necessary diagrams. (16)
Or
(b) Explain the working principle of sodium analyzer and dissolved oxygen analyzer with neat diagram. (16)