Which risk increases when high-pressure fuel injectors in a diesel engine experience prolonged electrical overcurrent?

💡 Explanation

When diesel injectors experience overcurrent, excessive heat buildup in the nozzle tip causes thermal decomposition of fuel, resulting in carbon deposits (coking) that obstruct proper spray patterns. Therefore nozzle coking is the risk, rather than valve float, bearing seizure, or piston cracking, which depend on mechanical or lubrication-related failures.

• Which outcome occurs when differential thermal expansion over-stresses a ceramic insulator in a high-voltage DC transmission line?
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