Friday, July 10, 2015

Mahatma Gandhi University B.Tech Applied Electronics and Instrumentation Question paper 2014

University:  Mahatma Gandhi University
Course:  B.Tech
Subject : Applied Electronics and Instrumentation
Year of  Question Paper : 2014

B TECH DEGREE EXAMINATION
EIGTH SEMESTER

APPLIED ELECTRONICS AND INSTRUMENTATION ENGINEERING

INSTRUMENTATION SYSTEM DESIGN
(Common to AI010 801 and IC 010 801)
TIME: 3 Hrs Maximum: 100 marks
Answer all questions

PART A
Each question carries 3 marks

1) Discuss about the need for reference junction compensation in thermocouple.
2) Compare the features of 2 wire and 4 wire transmitters with smart transmitters.
3) Explain the factors affecting the sensitivity of bourdon tubes.
4) Write a note on Bid documents and project procedures.
5) Define the terms (i) modulation, (ii) Averaging, (iii) Auto correlation.

(5 × 3 = 15 marks)

PART B
Each Question carries 5 marks

6) Describe the operation of an inductive push pull amplifier.
7) Give the design procedure for ON-OFF controller with neutral zone.
8) Explain the design of square root extractor s for variable head flow meters.
9) Write a note of ISA symbols and its importance.
10) Explain shielding , screening and filtering

(5 × 5 = 25 marks)
PART C
Each question carries 12 marks

11) a) Explain the design of instrumentation amplifier. 8 marks.
b) Explain strain gauge accelerometer 4 marks.
OR
12) Explain the various linearising techniques for thermistor and
thermocouple 12 marks.
13) Explain the design and implementation of electronic PID controller 12 marks.

OR
14) What are annuciators and ennuciators? Explain the design of low level
and high level annuciators. 12 marks.

15) Explain detail the design of orifice meter for a given flow condition. 12 marks.
OR
16) a) Explain the design of rotameter 6 marks.
b) Describe the design of bourdon tube 6 marks.

17) a) Explain with an example the process flow sheet 6 marks.
b) Discuss about the preparation of Instrumentation project 6 marks.
OR
18) a) Write notes on PI diagram 6 marks.
b) Discuss about the Instrument specific sheet for pressure 6 marks.

19) Describe any three methods for noise reduction 12 marks.
OR
20) Explain various noise sources and coupling mechanisms. 12 marks.
 .
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