Basic Electronics Questions for Interview Preparation (PART 2)

1. During the turn off of a thyristor the current flow does not stop at the instant when the current reaches zero but continuous to flow to a peak value in the reverse direction. This is due to _________
2. It is preferable to use a train of pulses high frequency for gate triggering of SCR in order to reduce _________
3. _____________converters allow power flow in either direction.
4. One of the assumption made in any commutation circuit is ____________ does not change during commutation.
5. _______commutation is also called as current commutation.
6. Voltage commutation is also called as _______
7. For forcing voltage to zero, forced commutation uses __________
8. Complimentary commutation belongs to __________
9. _________commutation is employed for modified Mc. Murray inverter.
10. Turn off time of a thyristor depends  on ______  and __________
11. In class E external pulse commutation duration of commutation pulse must be ______  the turn off time of SCR
12. For reliable current commutation peak discharging current should be _______load current.