In a $$3$$ - phase controlled bridge rectifier, with an increase of overlap angle the output $$dc$$ voltage

Which of the following does not cause permanent damage of an $$SCR?$$

The Triac can be used only in

During a disturbance on synchronous machine, the rotor swings from A to B before finally settling down to a steady state at a point C on the power angle curve. The speed of the machine during oscillation is synchronous at point(s)