Which risk increases when a silicon-controlled rectifier's (SCR) gate loses control?

💡 Explanation

Thermal runaway increases because positive feedback in the SCR's current gain increases with temperature; therefore, increased temperature causes more current, further increasing temperature, rather than a stable operating point reached under controlled gate conditions.

• Which outcome occurs when a turbine's nacelle yaw gearbox experiences component fatigue?
• Which outcome occurs when distributed capacitance in a long transmission line circuit is ignored?
• Which risk increases when incorrectly sizing step-down transformer amperage in an industrial power distribution system?
• Which risk increases when improperly compacting soil around a buried, reinforced concrete column?
• Which risk is most elevated when post-tensioned concrete tendons experience corrosion induced volume expansion within a bridge structure?
• In a fly-by-wire aircraft, which consequence results following the disconnection of both primary elevon control cables?