B H192032

Reg No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

EIGHTH SEMESTER B.TECH DEGREE EXAMINATION(S), OCTOBER 2019

Course Code: EE404

Course Name: INDUSTRIAL INSTRUMENTATION AND AUTOMATION

Pages: 2

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer all questions, each carries 5 marks. Marks
1 Draw the step response of a first order sensor. Explain the effect of time (5)
constant on the nature of response of the sensor.
2 Explain the principle of operation of a variable reluctance tachometer. (5)
3 What is an instrumentation amplifier and discuss its role in instrumentation (5)
systems?
4 What are the advantages and disadvantages of MEMS? (5)
5 Explain the characteristic features of shape memory alloy. (5)
6 Define an industrial automation system and enlist its components. (5)
7 Compare programmable logic controller with personal computer. (5)
8 What are the main components of SCADA? (5)
PART B
Answer any two full questions, each carries 10 marks.
9 (a) Explain the factors governing the selection of a transducer for an (6)
instrumentation system
(b) Draw and explain second order sensor time response (4)
10 a) The output of an LVDT is connected to a 5V voltmeter through an amplifier of (6)
gain 250. The voltmeter has 100 divisions. The scale can be read upto 1/5 th of
a division. An output of 2 mV appears across the terminals of LVDT when the
core is displaced through a distance of 0.5 mm. Calculate (i) Sensitivity of the
LVDT (ii) sensitivity of the whole setup and (iii) resolution of the instrument
b) Draw and explain the working of a capacitive differential pressure transducer. (4)
11 8) Draw the block diagram representation of a process control system and explain (5)
the function of each block.
b) Explain the measurement of flow using a hot wire anemometer (5)

PART C
Answer any two full questions, each carries 10 marks.

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