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 with scroll compressor when non-condensable gases contaminate refrigerant?
• Which outcome occurs when excessive current passes through an inductive power transformer's primary circuit?
• Which risk increases when exceeding design limits for connecting rod angularity relative to the crankshaft?
• Which outcome primarily results when thermal expansion misaligns the encoder disk within a high-speed robotic servo?
• Which outcome arises due to sustained loading on a pre-stressed concrete beam close to its design limit?
• Which outcome is LEAST likely when a reinforced concrete column experiences chloride-induced corrosion of the rebar?