Anna University Chennai 2011-6th Sem B.E Electronics & Communication Engineering ./B.Tech , IL/ Electronics and Communication Engineering EC 2351- MEASUREMENTS AND INSTRUMENTATION - Questio
B.E./B.Tech. DEGREE EXAMINATION,
APRIL/MAY 2011, 6th Semester,
Electronics and Communication Engineering,
EC 2351- MEASUREMENTS AND INSTRUMENTATION,
REGULATION-2008
Reg. No. :
Question Paper Code : 11297B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2011 Sixth Semester jf
Electronics and Communication Engineering EC 2351 MEASUREMENTS AND INSTRUMENTA1 (Regulation 2008)
Time : Three hours Maximum : 100 marks
Answer AUb questions PART A (10 x 2 olSirks)
1. Mention the significance of measurements.
2. Compare Moving coil with Moving lronstriiHfffis.
3. Draw the internal structure of CRT and pit its functions.
4. What are the two sjp*fifiant problems with diodes when used for RF rectification?
5. What is Barkhausen Criteri| for pusTped oscillation?
6. Draw the block diagram of spectrum analyzer.
7. What are the advantages of digirf instruments over analog instruments?
8. What are the different types of Digital Voltmeter?
9. Draw the block diagram of Digital Data Acquisition System.
10. What are.Jhe key features of fully automatic digital instruments?
PART B (5 x 16 = 80 marks)
11. (a) " (i) What is the need for standards of measurements? How they are w classified? Explain (8)
isie* I (ii| Hew the unknown frequency is measured using Wein bridge 1 jBiethod? (8)
I Or
12. (a) (b)
13. (a) (b)
14. (a) (b)
15. (a)
(i)
(ii)
(i)
(ii)
(i)
(ii)
(i)
(ii)
(i)
(n)
How computer control radio receiver?
(i)
(ii)
(i)
(8)
ni)
11297
With necessary dilgramJr explain Ramp type digital voltmeter. (8) Draw the block diagjralm of digital frequency meter and explain. (8)
What are the factors to be considered while interfacing transducers to electronic control and measuring systems? (8)
Dra%h, the block schematic representation of the IEEE 488 iftruntation bus and explain. (8)
; Or
Exj>lj|jif the optical time domain reflectometer with a neat diagram.
(8)
Or
Discuss the measurement of DC and A> voltages and eurrjfits using an Electronic Multimeter. (8)
Draw the block diagram of True RMS reading voltmer and explain its operation. (8)
Explain how function generator generates sine wave, triangular wave and square wave. (8)
Draw the block diagram of sweep-frequency generator and explain.
(8)
What are the different types of errors in measurement? Explain. (8) How do you measure the unknown inductance using Hay Bridge? (8)
Draw the block diagram of sampling oscilloscope and explain the principle.
Explain the measurement of quality factor of a coil. .. (8)
What is wave analyzer? Aw it analvles tjfe harmonics? Explain. (8) Explain the vector jaSfWtSik aimlvzer ajiAst its application. (8)
What is virtual instrument? List the advantages of virtual instrument over conventional instrument (8)
measurement system is used for testing
(8)
rite a detailed note on data loggers.
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| Earning: Approval pending. |
