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Posted Date: 17 Sep 2009 Posted By: Prashant Narayan Iyer Member Level: Gold
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2007 Mahatma Gandhi University B.Tech Electronics & Communications Engineering Basic Electronic Engineering Question paper
PART A
All questions carry 4 marks each
1. Explain the principle of LDR?
2. What are the different types of Resistors:' Give applications?
3. Write a brief note on P and N type materials?
4. Explain the working zener diode'?
S. Discuss the basic principle of TV?
6. Define frequency, propagation and amplitude of waves?
7. Write short notes on X-Y recorder?
8. Explain the working of a thermistor?
9. Differentiate between RAM and ROM?
10. Explain the working of a magnetic tape?
(10 × 4 = 40 marks)
PART B
All questions carry 12 marks each. Answer either A or B
11. A. Explain with figures the motion of electron in a magnetic field? Compare it with electrostatic field?
OR
B. Write brief notes on thermionic emission, photo emission and secondary emission?
12. A. Explain the working of PNP and NPN transistors?
OR
B. Briefly describe a typical single stage amplifier circuit?
13. A. Give a simplified block schematic of a TV receiver?
OR
B. Give a simplified block schematic of a radio receiver?
14. A. Explain the working of microphones?
OR
B. Explain the working of loud speakers?
15. A. Give a brief description of the different I/O devices?
OR
B. Explain the basic principle of the floppy discs and hard discs?
(5 × 12 = 60 marks)
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