Question bankTwo marks questions:-

Chapter 1:- Transistors:-1. Define:-

a. Transistor.b. Cut-off regionc. Active regiond. Saturation region.e. Input resistance of transistorf. Output resistance of transistorg. Current gain.h. Voltage gaini. DC load line j. Stabilizationk. Operating point (Q-point or Quiescent point)

2. What is need of biasing?3. Draw the symbols of:-

a. NPN transistorb. PNP transistor

4. List applications of following:-a. Transistorb. CE amplifier.

5. List advantages of:-a. CE amplifier.

6. State the need of heat sink.

Chapter 2:- FET:-1. Draw symbols of:-

a. N-ch JFETb. P-ch JFETc. N-ch E-MOSFET.d. P-ch E-MOSFET.e. N-ch D-MOSFET.f. P-ch D-MOSFET.

2. List the applications of:-a. FETb. MOSFET

3. Classify FET.4. Define:-

a. Drain resistanceb. Mutual capacitancec. Amplification factord. Pinch-off voltage

Chapter 3:- Amplifier:-1. Define:-

a. Amplifierb. Current gain.c. Voltage gaind. Power gaine. Power amplifier.f. Cross over distortion.g. Bandwidth.

2. List applications of following:-a. Direct coupled amplifierb. Transformer coupled amplifierc. RC coupled amplifierd. Class A power amplifier.e. Class B power amplifier.f. Class AB power amplifier.g. CE amplifier.

3. List advantages of:-a. Class A power amplifier.b. Class B power amplifier.c. Class AB power amplifier.d. CE amplifier.

4. List values of efficiencies of the following:-a. Direct coupled class A power amplifier.b. Transformer coupled class A power amplifier.c. Class B power amplifier.d. Class AB power amplifier.

5. Explain concept of cross over distortion.6. State need of multistage amplifier.7. List advantages of:

a. RC coupling amplifierb. Direct coupling amplifierc. Transformer coupling amplifierd. Single tuned amplifiere. Double tuned amplifier.

8. list the disadvantages of:-a. RC coupling amplifierb. Direct coupling amplifierc. Transformer coupling amplifierd. Class A power amplifier.e. Class B power amplifier.f. Class AB power amplifier.g. Single tuned amplifierh. Double tuned amplifier.

9. State the need of tuned amplifier.

Chapter 4:- Feedback amplifiers and Oscillators:-1. List types of feedback (positive feedback and negative feedback). Define them. 2. List advantages of negative feedback.3. Define oscillator.4. State Barkhausen’s criterion.5. List advantages of crystal oscillator.6. List applications of crystal oscillator.7. List advantages of RC phase shift oscillator.8. List disadvantages of RC phase shift oscillator.9. List applications of RC phase shift oscillator.

Chapter 5:- Time base generators:-1. Draw symbol of UJT.2. List applications of time base generators.3. List applications of miller sweep generators.4. Draw the I-V characteristics of UJT with neat label.5. Draw the electrical equivalent circuit of UJT’s construction.6. List the applications of UJT.

Chapter 6:- Regulated power supply:-1. Define:-.

a. Regulation.b. Regulator.c. Load regulation (along with formula).d. Line regulation (along with formula).

2. Give the need of regulator3. List the applications of regulator.4. Draw functional pin diagram of 7805 and 7905.5. Draw functional pin diagram of IC LM 723.6. List advantages of IC voltage regulators.7. List features of IC 723.8. List applications of IC 723.

Four marks questions:-

Chapter 1:- Transistors:-1. Draw the symbol of NPN transistor. Also explain its working principle along with its

constructional diagram.2. Draw the symbol of PNP transistor. Also explain its working principle along with its

constructional diagram.3. Draw the experimental circuit diagram of CE configuration. Explain it along with its input and

output characteristics.4. Draw the experimental circuit diagram of CB configuration. Explain it along with its input and

output characteristics.5. Draw the experimental circuit diagram of CC configuration. Explain it along with its input and

output characteristics.6. Draw the output characteristics of CE configuration, showing cut-off region, active region and

saturation region. Also define input resistance and output resistance.7. Define α and β. Derive relation between α and β. 8. Compare CB, CE and CC amplifiers.9. Draw the circuit diagram of transistor as a switch and explain its working. (draw waveforms)10. State the need of biasing. What is importance of DC load line?11. Draw the circuit diagram of fixed biasing and explain it along with the necessary equations.12. Draw the circuit diagram of base biasing with emitter feedback and explain it along with the

necessary equations.13. Draw the circuit diagram of voltage divider biasing and explain it along with the necessary

equations.14. Define stabilization. Explain thermal runaway process. State how thermal runaway can be

avoided.

Chapter 2:- FET:-1. Draw the construction of N-channel JFET and explain its working principle.2. Draw the construction of P-channel JFET and explain its working principle.3. Draw circuit diagram of N-channel JFET and explain its working. Also draw the VI

characteristics.4. Draw the drain characteristics of N-channel JFET and explain each region in detail.5. Draw the transfer characteristics of N-channel JFET and explain it.6. Draw the circuit diagram of source self biasing and explain it along with the necessary

equations.7. Draw the circuit diagram of drain to source biasing and explain it along with the necessary

equations.8. Draw the construction of N-channel Enhancement type MOSFET (E-MOSFET) and explain its

working principle.9. Draw circuit diagram of N-channel Enhancement type MOSFET (E-MOSFET) and explain its

working. Also draw the VI characteristics.10. Draw the transfer characteristics of N-channel Enhancement type MOSFET (E-MOSFET) and

explain it.11. Draw the construction of N-channel Depletion type MOSFET (D-MOSFET) and explain its

working principle.

12. Draw circuit diagram of N-channel Depletion type MOSFET (D-MOSFET) and explain its working. Also draw the VI characteristics.

13. Draw the transfer characteristics of N-channel Depletion type MOSFET (D-MOSFET) and explain it.

14. Compare E-MOSFET and D-MOSFET15. Compare JFET and MOSFET.

Chapter 3:- Amplifier:-1. Draw the circuit diagram of single stage CE amplifier and explain the function of each

component in it.2. Draw the circuit diagram of single stage CE amplifier and explain its working along with

waveform.3. Draw the circuit diagram of single stage CE amplifier. Draw its frequency response. Define

bandwidth.4. Draw the circuit diagram of direct coupled CE amplifier and explain it.5. Draw the circuit diagram of transformer coupled CE amplifier and explain it.6. Draw the circuit diagram of RC coupled CE amplifier and explain it.7. Draw frequency response of RC coupled amplifier and explain it.8. Draw frequency response of transformer coupled amplifier and explain it.9. Draw frequency response of direct coupled amplifier and explain it.10. Compare RC coupled, direct coupled and transformer coupled amplifier.11. Draw and explain single stage common source FET amplifier.12. Compare small signal amplifier (voltage) and large signal amplifier (power amplifier).13. Draw the circuit diagram of series resistor fed class A power amplifier and explain its working

along with its waveform.14. Draw the circuit diagram of transformer coupled class A power amplifier and explain its

working along with its waveform.15. Draw the circuit diagram of class B push-pull power amplifier and explain its working along

with its waveform.16. Explain the concept of cross-over distortion. Explain how cross-over distortion is avoided?17. Draw the circuit diagram of single tuned amplifier and explain its working. Also draw its

frequency response.18. Draw the circuit diagram of double tuned amplifier and explain its working. Also draw its

frequency response.19. Compare single tuned amplifier and double tuned amplifier.

Chapter 4:- Feedback amplifiers and oscillators:-1. Compare amplifier and oscillator.2. Draw different types of feedback configurations.3. State the need of oscillator. State barkhausen’s criteria to generate sustained oscillations.4. Draw the circuit diagram of RC phase shift oscillator and explain its working also write its

formula for frequency of oscillations.5. Draw the circuit diagram of crystal oscillator and explain its working.6. Compare RC phase shift oscillator and crystal oscillator.7. Solve numerical of RC phase shift oscillator and crystal oscillator.

Chapter 5:- Time base generators:-1. Draw electrical equivalent circuit of UJT. Define intrinsic stand-off ratio (ή). What is meaning

of negative resistance region.2. Draw and explain characteristics of UJT.3. Describe UJT relaxation oscillator with neat circuit diagram.4. Draw and explain the working principle of UJT.5. In UJT sweep circuit, calculate time period and frequency of oscillation if η= 0.62, R=5KΩ, C=

0.05μF.6. Describe the working of voltage time base generator with its circuit diagram.7. Describe the working of current time base generator with its circuit diagram.8. Describe the working of bootstrap time base generator with its circuit diagram.9. Describe the working of miller sweep generator with its circuit diagram.

Chapter 6:- Voltage regulators:-1. Draw the circuit diagram of zener as a voltage regulator and explain its working.2. Draw the circuit diagram of series transistorized voltage regulator and explain its working.3. Draw the circuit diagram of shunt transistorized voltage regulator and explain its working.4. Draw the block diagram of DC regulated power supply and explain the function of each block.5. Describe positive voltage regulators using IC 78XX series.6. Draw the circuit diagram of negative 5 volts using 7905 IC. Describe it’s working.7. Draw circuit diagram of dual tracking power supply which gives + 12 volts.8. Construct dual power supply capable of giving + 15 volts using 78XX and 79XX series IC’s.9. Draw the block diagram of IC 723. Explain its working.10. List the applications of IC 72311. List the features of IC 723