EDC imp que.docx

**EDC IMPORTANT QUESTIONS** **SHORT QUESTIONS** +-----------------------------------------------------------------------+ | 1. Classify different types of FETs. | | | | 2. Define the Source, Dra...

**EDC IMPORTANT QUESTIONS** **SHORT QUESTIONS** +-----------------------------------------------------------------------+ | 1. Classify different types of FETs. | | | | 2. Define the Source, Drain and gate. | | | | 3. List the applications of JFET. | | | | 4. Compare JFET and MOSFET. | | | | 5. Draw the drain characteristics of JFET. | | | | 6. Define pinch of voltageoff JFET. | | | | 7. compare JFET and BJT. | | | | 8. List the advantages of FET over BJT. | | | | 9. Draw the mutual characteristics of JFET. | | | | 10. Draw the circuit diagram of CMOSFET inverter | | | | 11. List the specifications of JFET's. | | | | 12. Define and D.C load line and A.C load line with diagram. | | | | 13. List the methods of biasing circuits. | | | | 14. Define stability factor. | | | | 15. Define gain and frequency response of an amplifier. | | | | 16. ). | | | | 17. State the reason for wide use of CE amplifier. | | | | 18. Define stabilization. | | | | 19. Define operating point and stability factor. | | | | 20. List the factors effecting the Q -point | | | | 21. Draw the circuit of single stage RC coupled CE amplifier. | | | | 22. Define Bandwidth of an amplifier. | | | | 23. Define Thermal runway. | | | | 24. Explain the need for proper biasing in amplifier circuits. | | | | 25. Classify the Amplifiers based on frequency and coupling. | | | | 26. Compare and define negative and positive feedback. | | | | 27. List the 4 types of negative feedback amplifiers. | | | | 28. List the advantages of negative feedback amplifier. | | | | 29. Draw the circuit diagram of Direct coupled amplifier. | | | | 30. Need for multistage amplifier. | | | | 31. Draw the block diagram of negative feedback amplifier. | | | | 32. Define feedback. | | | | 33. Draw the blcok diagram positive feed back. | | | | 34. List the types of Sampling and Mixer Networks | | | | 35. What is the need for power amplifier? | | | | 36. List three performance measures of power amplifier. | | | | 37. Draw the block diagram of power amplifier. | | | | 38. Explain the effect of Distortion in amplifier. | | | | 39. List the different types of distortions in power amplifiers. | | | | 40. Classify power amplifiers based on peroid of conduction | | | | 41. Mention different types of heat sinks. | | | | 42. What is need of Push -Pull amplifier. | | | | 43. Compare all the power amplifiers. | | | | 44. Define Tuned amplifier and list the types of Tuned amplifier. | | | | 45. State the condition for an amplifier to work as an oscillator. | | | | 46. Explain the Barkhausen criteria in oscillators. | | | | 47. Classify oscillators. | | | | 48. List the Advantages of crystal oscillator. | | | | 49. Define oscillator. | | | | 50. Draw the Equivalent circuit of crystal. | | | | 51. List the merits and demerits of LC oscillators. | | | | 52. Write the conditions to get sustained oscillations | | | | 53. Draw the Phas shift network circuit. | | | | 54. List the Applications of varactor diode. | | | | 55. Draw the characteristics of varactor diode. | | | | 56. List any three applications of photovoltaic cells. | | | | 57. Write the applications of LCD. | | | | 58. Draw the symbols of photodiode , photo transistor and varactor | | diode. | | | | 59. List the different types of LCD. | | | | 60. Explain the principle of photovoltaic cell | | | | 61. Draw the characteristics Photo diode. | | | | 62. List the advantages of LCD. | | | | 63. Write the applications of photodiode. | +-----------------------------------------------------------------------+ **[LONG QUESTIONS]** +-----------------------------------------------------------------------+ | 1. Describe the construction and principle of operation of n-channel | | JFET. | | | | 2. Define the parameters of JFET and obtain the relation among them. | | | | 3. Explain the construction and working of Depletion type N-channel | | MOSFET. | | | | 4. Explain the construction and working of Enhancement type | | N-channel MOSFET. | | | | 5. Explain the principle of operation of CMOSFET. | | | | 6. Explain the use of JFET as a constant current source. | | | | 7. Application of JFET and MOSFET. | | | | 8. Explain and draw a)drain characteristics of JFET. | | | | b)mutual characteristic of JFET. | | | | 9. 10. Explain the a)concept of AC load line. | | | | b)concept of DC load line. | | | | 11. Explain collector to base resistor method of biasing and explain | | its advantages and disadvantages. | | | | 12. Explain potential divider method of biasing and explain its | | disadvantages. | | | | 13. Explain the selection of operating point on DC load line with | | Wave forms | | | | 14. Define H-parameters of a transistor. | | | | 15. a\) Explain the need for stabilization | | | | b)Define various stability factors( S,Svb,S beta) | | | | 16. Draw the practical CE amplifier , explain the functions of each | | component and Explain Frequency response. | | | | 17. Explain the common source FET amplifier. | | | | 18. Explain fixed bias circuit and ,Derive its Stability factor. | | | | 19. Explain self bias circuit and derive it\'s stability factor. | | | | 20. Explain the principle of operation of two stages RC coupled | | amplifier and explain frequency response. | | | | 21. Explain the principle of operation of transformer coupled | | amplifier and explain frequency response. | | | | 22. a\) Explain the positive and negative feedback b) Write the types | | of | | negativ feedback. | | | | 23. a)Explain the concept of Feedback. | | | | b)Draw the block diagrams of voltage series,current | | series,current shunt,an | | | | And voltage shunt. | | | | 24. Explain the block diagram Negative feedback amplifier. | | | | 25. Explain Voltage series feedback using emitter follower amplifier | | circuit. | | | | 26. a\) Draw the block diagrams of negative feedback types. | | | | b)Derive the expression for gain of negative feedback | | | | 27. Explain the charactestics of neagative feedback amplifier | | | | 28. Explain the effect of negative feedback on gain, bandwidth,input | | and | | | | output impedance. | | | | 29. a)Compare positive and negative feedback amplifiers | | | | b)explain the purpose of coupling devices in multistage | | | | 30. Explain the operation of class A power amplifier with waveforms. | | | | 31. Explain class B power amplifier with waveforms. | | | | 32. Explain the operation of class B push pull power amplifier. | | | | 33. Derive the efficiency of class A power amplifier with transformer | | load.compare efficiency of all power amplfiers | | | | 34. Explain the operation of classAB power amplifier with waveforms. | | | | 35. Explain the operation of class A power amplifier with Transformer | | load. | | | | 36. Draw and explain the working of RC phase shift oscillator. | | | | 37. Draw and explain the working of colpitts oscillator. | | | | 38. Draw and explain the working of Hartley oscillator. | | | | 39. Draw and explain the working of Transistor crystal oscillator. | | | | 40. a)Mention the requisites of an Oscillator. | | | | 41. b)State the condition for an amplifier to work as an Oscillator. | | | | 42. Explain the working principle of varactor diode and Draw its | | characteristics. | | | | 43. Explain the construction and operation of photo transistor. | | | | 44. Explain the construction and operation of photo Diode. | | | | 45. Explain the construction and working principle of LED. | | | | 46. Explain the construction and working of Dynamic scattering type | | LCD | +=======================================================================+ | | +-----------------------------------------------------------------------+ | | +-----------------------------------------------------------------------+ | | +-----------------------------------------------------------------------+