35 TOP MOST POWER ELECTRONICS LAB VIVA Questions and Answers
Power Electronics LAB VIVA Questions with Answers pdf :-
1.What is holding current in SCR?
2. What is latching current in SCR?
3.What aturn on methods of SCR?
4.What is snubber circuit?
5.What is hard switching of the thyristor?
6.What is firing angle?
7.What is meant by SOA?
8.What are the main components used for isolating the Power Circuits, Power Semiconductor from the low-power circuit?
9.Name some of the current controlled (current driven) devices…
10.Name some of the voltage driven ( Voltage controlled) devices
11.What is duty cycle?
12.Can fuses with an AC voltage rating be used in a DC applications?
13.What are the characteristics of ideal Opamp?
14.For High voltage applications will you prefer MOSFET or IGBT?
15.For High frequency applications will you prefer MOSFET or IGBT? Why?
Power Electronics VIVA Questions and Answers pdf :-
16.What are the advantages of free wheeling diode in rectifier circuit?
17.What is meant by commutation?
18.What are the types of commutation?Natural commutation
19.What is natural commutation?
20.What is forced commutation?
21.What are the types of commutation with respect to commutation process?
22.What is meant by cyclo-converter?
23.What are the types of cyclo-converters?
24.What is step down cyclo-converter?
25.What is step up cyclo-converter ?
26.What does the Voltmeter in AC mode show? Is it RMS value or peak value?
27.What is the necessity to use the special machines?
28.What are the control strategies of chopper?
29.What is delay angle or what is firing angle of phase controlled rectifier?
30.What is Universal Motor?
31.Give some examples of power electronics applications in the day-to-day life?
32.What is meant by PMDC?