Which consequence results when SF6 circuit breakers fail to quench?

💡 Explanation

When SF6 breakers fail, the arc continues due to insufficient dielectric recovery; resulting in an Arc Flash: because sustained ionization heats air, intensifying conduction, elevating risk. Therefore, B is correct, rather than alternatives, which might occur under different equipment failure conditions.

• Which consequence results when a hydraulic system check valve vibrates?
• Which outcome increases in a fly-by-wire aircraft when airspeed decays below the preprogrammed minimum?
• Which outcome occurs when increased hysteresis affects quadrature encoder signals fed to a PLC in a high-precision servo-controlled robotic arm?
• Which consequence results when thermal runaway affects PLC-controlled robotic arm servo drives?
• Which risk increases when mismatched hydraulic actuators create pressure?
• Which error occurs when a LiDAR sensor degrades, affecting SLAM algorithms in autonomous vehicles?