BPE 314363 Guessing Paper & IMP Question Bank: Basic Power Electronics

MSBTE electronic and telecommunications backlog examination Guessing Paper & IMP Question Bank for BPE 314363 Power Electronics is given below.

This question bank is as per the new teaching scheme of MSBTE for polytechnic students. Solve all questions in a separate notebook.

BPE 314363 Guessing Paper MSBTE Winter 2025 Exam

Note: Guessing Paper is only for educational purposes. We don’t give a guarantee of any questions to be asked in the exam.

Q.1: Attempt any FIVE of the following :

1. Define holding and latching current.
2. List triggering methods of SCR.
3. Define firing angle and conduction angle.
4. Describe R Triggering method used for SCR.
5. Compare VI characteristics of LASCR and SCR.(symbol LASCR)
6. Draw proximity detector using SCR.

Q.2: Attempt any THREE of the following :

1. Describe the working of Class C commutation with waveform.
2. Block diagram and working of Series inverter,/ Parallel inverter
3. Explain with circuit diagram the operation of emergency lighting system.
4. Describe the working of power MOSFET with its VI characteristics

IMP Question Bank: Basic Power Electronics

Unit – I Power Semiconductor Devices (16 marks)

• State any two advantages of IGBT.
• Draw the symbol & V-I characteristics of
  a. DIAC b. LASCR c. TRIAC d. LASCR e. SUS f. SBS
• Draw the symbol of SCS and also draw its labelled characteristics with ON state and OFF state.
• Give two applications of GTO & UJT.
• State the types of power MOSFETS with a diagram.

Unit – II: Triggering and Commutation Methods of SC

• Define commutation. State the types of commutation.
• State the need for isolation in pulse transformers in triggering circuits and give its two applications.
• List out triggering methods for SCR. Which method is mostly preferred?
• Compare forced commutation with natural commutation based on
  i) input supply ii) circuit component requirement iii) application

Conclusion

All important questions of Basic Power Electronics for fourth-semester backlog students are listed above.

BPE 314363 New Model Answer Papers : Basic Power Electronics