Power Electronic Class Test Question Paper
Unit 1 Q.1. Explain the two transistor analogy of SCR with equivalent circuit and give three application Q.2 Explain the operation of IGBT with VI and Switching characteristics. Q.3. Draw & explain the necessity of static and dynamic equalizing circuit for series connected SCR’s? Derive relations used for determining the valus of shunt resistor Rand capacitor C in this circuit. Q.4. describe the operation of LASCR, give its industrial applications. Draw circuit diagram and waveform of time delay using SCR & UJT for AC load. Q.5. what are the different methods to turn on the Thyristor? Q.6. draw V-I characteristics of DIAC. is DIAC equally sensitive in both the directions ? give two application of DIAC. Q.7. compare power BJT, power MOSFET and IGBT. Q.8. states any two features of power MOSFET which makes it suitable for medium power application. Q.9. Explain the role of the following power devices and their application Power MOSFET IGBT GTO SCR Q.10. Describe the different...