Differentiate in short, DIAC,TIAC and Thyristor.
[3 marks]Explain working and construction of GTO.
[4 marks]Explain two transistor analogy for Thyristor.
[7 marks]List different turn on methods of Thyristor. Explain any one
[3 marks]Explain UJT triggering of SCR.
[4 marks]Explain series and parallel connection operation of thyristor with neat diagram.
[7 marks]Explain over voltage and over current protection SCR.
[7 marks]Describe function of freewheeling diode in converter circuit.
[3 marks]Explain continues and discontinues modes regarding converter operation.
[4 marks]Explain the operation of 1-ϕ full wave rectifier with R-Lload in detail.
[7 marks]What are the effects of source and load inductance on rectifier performance?
[3 marks]Explain 3-ϕ half wave rectifier in short.
[4 marks]Explain BUCK-BOOST converter in details
[7 marks]Give classification of DC choppers.
[3 marks]Write short note on pulse transformer and opto-coupler.
[4 marks]Explain principle, operation and analysis buck converter.
[7 marks]Explain different control strategies for choppers.
[3 marks]Write applications of DC-DC converters also write difference between voltage and current commutated choppers.
[4 marks]Explain morgan’s chopper in detail.
[7 marks]Explain semi convertor application in DC series motor drive.
[3 marks]Discuss braking operation of separately exited DC drive using fully controlled converter.
[4 marks]Explain 4 quadrant operations of DC drives using phase controlled converter.
[7 marks]Explain principle of regenerative brake control.
[3 marks]Discuss how power control can be achieving by DC-DC convertor for series DC motor drive.
[4 marks]Explain 4 quadrant operation of DC drives using DC-DC chopper.
[7 marks]