23044-TRANSDUCERS AND SIGNAL CONDITIONERS BOARD EXAM QUESTION PAPER APRIL 2013

          

BOARD EXAM QUESTION PAPER

APRIL 2013

23044-TRANSDUCERS AND SIGNAL CONDITIONERS             

Department: EEE                                      Time:3 Hrs                                                                      

Staff in charge: N.Suresh kumar  Max Marks : 75                                                                                                                                          

PART-A (15X1=15 Marks)                   

Answer any fifteen of the following questions

1. What are the two parts of transducer?
2. Compare primary and secondary transducers.
3. What is load cell?
4. List the advantages of digital encoder.
5. What is the operating principle of resistive transducer?
6. State the application of capacitive transducers.
7. What is inductive transducer?
8. Expand RVDT.
9. Give the measurement range of temperature of thermocouple transducer.
10. What is photoconductive transducer?
11. Which device is used to measure the angular velocity?
12. Mention the principle of solar cell.
13. Define Op amp.
14. Define CMRR.
15. Draw integrator circuit using Op amp.
16. Name two types of comparators.
17. List different filters using Op amp.
18. Name the filter circuit that is used as differentiator.
19. What is clamper?
20. What is R-2R ladder network?

PART-B (5x12=60marks)

Answer all questions

21. (A) Write the short notes on: (i) Necessity of transducer (ii) Primary and secondary transducers.

 (Or)

 (B) (i) Explain the construction and operation of metal resistive thermometer (ii) Explain load cell.

22.(A) (i)  Explain how strain gauge is used in measurement of displacement.

       (ii) Discuss about capacitive transducer applications.

(Or)

 (B) (i)  Explain measurement of pressure using inductive transducers

       (ii) Explain LVDT with neat sketch.

23. (A) Briefly explain construction and working principle of thermocouple with a neat diagram.

(Or)

 (B) Explain the construction and working of Geiger Muller tube in radiation measurement

24.  (A) (i)  Explain AC signal conditioning with block diagram.

       (ii) Explain with neat diagram Op amp as a integrator.

(Or)

 (B) (i)  Explain the working of comparator with neat diagram.

       (ii) Explain the working of voltage to current converter using Op amp.

25.(A) Discuss about (i) Instrumentation (ii) Active filters using Op amp..

(Or)

           (B) Explain (i) Wien bridge oscillator using OP amp (ii) Zero crossing detector.