B.E-B.E Electronics and Instrumentation Engineering Data Acquisition and Communication systems(Sathyabama University, Chennai, Tamil Nadu-2010)
Friday, 23 August 2013 06:33Duraimani
(Established under section 3 of UGC Act,1956)
Course & Branch :B.E – EIE Max. Marks :80
Title of the Paper :Data Acquisition and Communication systems
Sub. Code :518605/618601 Time : 3 Hours
Date :22/04/2010 Session :FN
PART - A (10 x 2 = 20)
Answer ALL the Questions
1. Define Resolution of Digital to Analog converters.
2. Mention the advantages of Dual Slope Analog to Digital Converters.
3. State Sampling theorem.
4. What is the need for Data Acquisition system?
5. Define Amplitude modulation.
6. What is meant by Low level modulation?
7. Define modulation index in FM system.
8. What is the Duality between FM and PM waves?
9. Define synchronous detection.
10. What is the role of Phase discriminators?
PART – B (5 x 12 = 60)
Answer All the Questions
11. Explain the operation of a bit R-2R type Digital to Analog Converter and Derive the expression of the output voltage.
(or)
12. Draw the functional diagram of a successive approximation type analog to Digital converter and explain its working.
13. (a) Explain the operation of basic sample and hold circuit.
(b) Discuss on programmable peripherals.
(or)
14. Explain in detail the principle of Microprocessor based Data Acquisition system.
15. With a neat block diagram, explain the operation of AM transmitter.
(or)
16. Explain, with the aid of waveforms, the generation of AM wave and Derive the power relations.
17. Explain in detail the generation of FM wave using direct method.
(or)
18. Draw the block diagram of FM transmitter and explain the function of each block.
19. With a neat schematic, explain the working principle of Ratio detector.
(or)
20. Draw the block diagram of Superheterodyne receiver and explain the function of each block.
| Earning: ₹ 3.50/- |
