March 14, 2010

AI.04.606 INDUSRIAL INSTRUMENTATION


2008 Calicut University B.E Electronics and Instrumentation SIXTH SEMESTER B.TECH. DEGREE RE-EXAMINATION FEBRUARY, INDUSRIAL INSTRUMENTATION Question paper
SIXTH SEMESTER B.TECH. DEGREE RE-EXAMINATION FEBRUARY, 2008


AI.04.606 INDUSRIAL INSTRUMENTATION

Time: 3 hours
Maximum: 100 marks

Answer Question 1 and for Question 2 to 5 answer (A) or (B) in each question
1.
(a) What are pressure thermometers? State few applications of digital thermometer
(b) What are un intended junction? Explain unintended junction with respect to Fe-C Thermometers
(c) What are the merits and demerits of Bourdon tubes and diaphragms?
(d) What do you understand by high pressure and low pressure measurement?
(e) Write short notes on positive displacement type flow meters?
(g) Discuss the effect of different variables on flow measurement.
(h) What is hot wire anemometer? How can be the hot wire anemometer used in flow measurement?
(i) Write a short note on resistance type level instrument.

Part B:((4*15= 60 marks)
2. (A) (i) Explain the construction and working method of quartz crystal thermometer.
(ii)Compare the performance of thermopile and RTD.
Or
(B) (i) Explain the construction features and functioning of bimetallic type thermometer
(ii)Define the law of thermocouple. State few applications Liquid-in-glass thermometer.

3.
(A) (i) Explain how calibration is important in any pressure measurement technique.
(ii)Explain the construction and working of piezoelectric method pressure transducer.
Or
(B) (i) Distinguish between McLeod gauge and Ionization gauge.
(ii) Explain the construction features and functioning of a McLeod gauge

4.(A) (i) What do you understand by pitot tube? What are possible sources of error present in the pitot tube measurement?
(ii) Explain the construction and working method of vortex flow meter.
Or
(B) (i) Explain the construction features and functioning of orifice and rotameter.
(ii) What are vortex flow mater and Electromagnetic flow meter?

5. (A) (i) Explain the construction and working method of ultrasonic flow meter.
(ii) Using block diagram explain the components of thermal effect type level measurement?
Or
(B) (i) Write a short note on ultrasonic flow meter
(ii) Explain the construction features and functioning of nuclear radiation technique for level measurement


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