Which risk increases when a power grid lacks sufficient spinning reserve capacity?

💡 Explanation

Insufficient spinning reserve increases the risk of frequency instability during sudden load changes because under-frequency load shedding activates; therefore grid collapse chance increases, rather than the transformer or microgrid destabilization scenarios.

• Within a class-D amplifier driving a speaker, which consequence results when the MOSFET switching frequency nears the speaker's resonant frequency?
• Which effect arises from excessively lean fuel mixture in gasoline direct injection engine during cold start?
• What overheating consequence results when thermal contact worsens inside a high-power Peltier cooler?
• Which risk increases when pre-stressed concrete beam tendon force is inadvertently released before concrete cures?
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