Within substation transformers undergoing high reactive power load fluctuations, which outcome occurs when tap-changer inertia prevents rapid voltage adjustments?

💡 Explanation

Core saturation risk elevates because tap-changer *hunting* creates sustained over-fluxing. The induced EMF increases far above normal, therefore, driving the core into magnetic saturation, rather than mitigating voltage fluctuations.

• Which operational risk increases within bypass control valves when fluid viscosity rapidly decreases?
• Which outcome occurs when a refrigeration evaporator becomes excessively ice-covered due to moisture accumulation?
• Which risk increases when a turbocharged engine operates at high altitude with fixed wastegate settings?
• Which outcome occurs when hydraulic fluid temperature exceeds design limits in off-highway equipment?
• Which outcome occurs when cryogenic pump seals in liquid hydrogen transfer experience rapid disengagement?
• Which consequence results when stimulated-raman-scattering (SRS) affects single-mode fibers?