The IGBT resulted in higher switching speed and lower energy losses. It can be used for___________?

a. Reversal of power can be controlled by firing angle
b. Very good dynamic behavior
c. They can link two AC system operating unsynchronized
d. All of these

A. 61%
B. 71%
C. 81%
D. 91%

A. Phase lead helps to increase the phase margin of the control loop
B. Phase lag helps to increase the phase margin of the control loop
C. Phase lead helps to decrease the phase margin of the control loop
D. Phase lag helps to decrease the phase margin of the control loop

A. Load survey method
B. Mathematical method
C. Statistical method
D. Economic parameters

A. High di/dt
B. High dv/dt
C. Low di/dt
D. Low dv/dt

A. BJTs and SITs
B. BJTs and MOSFETs
C. SITs and MOSFETs
D. None of these