Mahatma Gandhi University (MGU) 2007 B.Tech Electronics and Communications Engineering Basic Electronic Engineering - Question Paper

PART A
All ques. carry four marks every


1. discuss the principle of LDR?

2. elaborate the various kinds of Resistors:' provide applications?

3. Write a brief note on P and N kind materials?

4. discuss the working zener diode'?

S. explain the basic principle of TV?

6. describe frequency, propagation and amplitude of waves?

7. Write short notes on X-Y recorder?

8. discuss the working of a thermistor?

9. Differentiate ranging from RAM and ROM?

10. discuss the working of a magnetic tape?


(10 × four = 40 marks)



PART B
All ques. carry 12 marks every. ans either A or B



11. A. discuss 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. discuss the working of PNP and NPN transistors?
OR
B. Briefly define a typical single stage amplifier circuit?


13. A. provide a simplified block schematic of a TV receiver?
OR
B. provide a simplified block schematic of a radio receiver?


14. A. discuss the working of microphones?
OR
B. discuss the working of loud speakers?


15. A. provide a brief description of the various I/O devices?
OR
B. discuss the basic principle of the floppy discs and hard discs?

(5 × 12 = 60 marks)

Earning:   Approval pending.