Voltage commutation circuit can be converted into a current commutation by interchanging the positions of____________?

Related Mcqs:

1. A single phase full bridge inverter can operate in load commutation mode in case load consists of____________?

   A. RL.
   B. RLC underdamped.
   C. RLC overdamped.
   D. RLC critically damped.

2. Between the incoming and outgoing devices in voltage commutation

   A. Large overlapping takes place
   B. Small overlapping operation
   C. No overlapping operation
   D. None of these

3. A single phase full bridge inverter can operated in load commutation mode in case load consist of______?

   A. RL.
   B. RLC underdamped.
   C. RLC overdamped.
   D. RLC critically damped

4. During the commutation period in 3 phase converter, overlap time is_____________?

   A. Dependent on the load current
   B. Dependent on the voltage
   C. Dependent on both the load current and load voltage behind the short circuit current
   D. Independent on both the load current and load voltage

5. In the operation and control of both naturally commutated and forced commutated SCR base converter, commutation plays an important role. The converters is / are ___________?

   A. AC – DC
   B. DC – DC
   C. DC – AC
   D. All of these

6. In commutation PAC stands for_______?

   A. Permanent angle converter
   B. Phase angle converter
   C. Phase angle commutation
   D. Phase and commutation

7. For commutation in three phase PAC, normally balanced three phase voltages VR, VY and VB are connected to the three legs of the converter via______________?

   A. Three inductances
   B. Three capacitances
   C. Three resistance
   D. Three transistors

8. During the commutation period in 3 phase converter, overlap time is____________?

   A. Dependent on the load current
   B. Dependent on the voltage
   C. Dependent on both the load current and load voltage behind the short circuit current
   D. Independent on both the load current and load voltage

9. Practical way of obtaining static voltage equalization in series connected SCRs is by the use of____________?

   A. One resistor across the string
   B. Resistors of the same value across each SCR
   C. Resistors of different values across each SCR
   D. One resistor in series with each SCR

10. Gate circuit or triggering circuit of a thyristor is

    A. lower power circuit.
    B. high power circuit.
    C. magnetic circuit.
    D. may be low power or high power circuit