Anna University Coimbatore 2009 B.E Electrical and Electronics Engineering Measurements and instrumention - Question Paper

ANNA UNIVERSITY COIMBATORE
B.E./B.Tech. DEGREE EXAMINATION:DECEMBER 2009
REGULATION-2008
(THIRD SEMESTER TO EEE)
080280016-MEASUREMENTS AND INSTRUMENTION
Time : three hours Maximum : 100 marks
PART A — (20 * two = 40 marks)
1. Listmain functional elements used in mostof the measurement systems.
2. what is static sensitivity of an instrument?
3. Write the various kinds of systematic errors.
4. Differentiate ranging from dispersion and deviation.
5. Write the various torques produced in PMMC instrument.
6. Write the causes of opening the secondary circuit of a current transformer when the primary winding winding is energized
7. State the blondel's theorem
8. When 2 wattmeter method is used for mearuement of power in 3 phase balanced circuit,comment upon the studying of the 2 wattmeter when the power factor is 0.3 lagging
9. State the advantages of DC potentiometers
10.list the application of wien's bridge.
11.How to minimize the electrostatic interference?
12.Write the applications of ratio transformer.
13.what is a magnetic tape?
14.List the main parts of cathode ray tube.
15.Write the characteristics of modern data loggers
16.what are the various seciconductor material used for construction of LED?
17.Mention the various kind of strain guages.
18.Write the advantages of differential output transducers.
19.What are the symmetrial crystalline materials used to construct piezoelectric transducers?
20.What are the drawback in variable network kind digital to analong converters?

PART B — (5 * 12 = 60 marks)
21.Describe the functional elements of an instrument with a block diagram.
22.Explain the integrating kind and staircase ramp kind digital voltmeters with the block diagrams.
23.Illustrate the differentmethods used for determining the B-H curve
24.Explain theoperation of basic slide wire DC potentiometer with circuit diagram and also illustrate the procedure for standardization.
25.With the help of neat circuit diagram discuss the produres to measure resistance and capacitance using transfomer ratio bridge
26.Describe the working principle of magnetic tape and magnetic disk
27.(a)Write the advantages of LED
(b)Draw the circuit diagram of data logger and discuss its basic operation.
28.(a)what are the important factor to be considered for transducer to be physically compatible with its intended applications?
(b) Design a 4-bit weighted variable resistive kind digital to analog converter.

Attachment: anna-university-coimbatore-2009-b-e-electrical-and-electronics-engineering-690-1.txt

Earning:   Approval pending.