Which risk increases when an autotransformer operates continuously above its nameplate kVA in a power grid?

💡 Explanation

Core saturation risk escalates because exceeding kVA limits in an autotransformer forces the magnetic core into deeper saturation during each AC cycle. Therefore core saturation is increased, rather than structural galloping, which is a high-wind transmission line condition.

• Which control system instability arises when excessive sensor input lag?
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• Which error occurs during signal transmission when symbol timings overlap?
• Which outcome occurs relating to glycol-based chiller performance when evaporator flow rate dips below minimum levels?
• Which risk increases when halocarbon refrigerants degrade under intense UV exposure?
• Which outcome occurs when ground fault occurs on distribution transformer secondary circuit?