In the illustrated solid-state "soft" starter for a three phase induction motor as shown in figure "A", what is the name of the devices that are controlled by the gate control circuits? EL-0060

Correct Answer: Option A — thyristors

Solid-state soft starters utilize back-to-back thyristors, or Silicon Controlled Rectifiers (SCRs), driven by adjustable gate control circuits to smoothly ramp up voltage and current to three-phase induction motors, reducing mechanical shock and electrical transients.