Rr311005-industrial Instrumentation

RR

Code No: RR311005 III B.Tech I Semester(RR) Supplementary Examinations, May 2009 INDUSTRIAL INSTRUMENTATION (Electronics & Instrumentation Engineering)

Time: 3 hours

Max Marks: 80 Answer any FIVE questions All questions carry equal marks ?????

1. What is interferometric comparator? Explain how interferometric comparator used for comparing the length of two gauge blocks? 2. List the different types of speed measuring devices. Explain with neat sketches, the construction and working of any two of them. 3. Write short notes on the following: (a) Working principle of in-line stationary torque sensors. (b) Working principle of in-line rotating torque sensors. 4. (a) Define vibration. How it is characterized and list some of its harmful effects. (b) Write a short notes on frequency counters. 5. Write a short notes on air pressure balance method used for the measurement of density. 6. (a) Name the various types of strain guages for different applications. (b) Why is viscosity measurement important for industrial processes? Explain the working principle of any one viscometer with a neat sketch. 7. (a) Why humidity is to be measured. (b) Define the psychrometric terms. i. ii. iii. iv.

Dry air. Saturated air. Relative humidity. Dry bulb temperature.

8. List the different types of moisture measuring methods. Explain any one method. ?????