EC6202 Electronic Devices and Circuits, Second year, Department of Electrical & Electronics Engineering, First and second Units Questions

EC6202 Electronic Devices and Circuits, Second year, Department of Electrical & Electronics Engineering, First and second Units Questions.

PART A(10*2=20)

1. Differentiate between drift current & diffusion current?

2. Differentiate between Zener breakdown avalanche breakdown ?

3. What is the PIV value for HWR & FWR

4. What is a rectifier ?

5. What is meant by depletion region?

6. What is biasing? What is the need for biasing?

7. Differentiate between FET & BJT

8. Define ripple factor?

9. Why BJT is a current control device?

10. What is pinch off?

PART B (5*13=65,15*1=15)

1) Explain transition capacitance & diffusion capacitance?       (13)

2) Explain briefly in full wave bridge rectifier?                         (13)

3) Explain Zener diode construction and it’s characteristics      (13)

4) Draw the block diagram construction and working principle of JFET?  (13)

5) Draw the block diagram construction working principle and characteristics of BJT  (13)

6) Draw the neat sketch & explain SCR                     (15)