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← TechnologyWhich risk increases sharply when exceeding the Volt-Ampere (VA) rating of a backup power inverter circuit?
A)Resistive heating in MOSFETs✓
B)Electromagnetic interference (EMI)
C)Increased capacitive reactance
D)Reduced core saturation limits
💡 Explanation
Exceeding the VA rating causes increased resistive heating in MOSFETs because higher current draw overwhelms the thermal management capacity and temperature rises exponentially, therefore risking thermal runaway, rather than simple EMI increases from transient switching or core saturation which impact efficiency.
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