Which phenomenon impairs the performance of an oil diffusion pump when the boiler's heating rate is excessively high?

💡 Explanation

When the heating rate is too high, the pumping fluid in an oil diffusion pump's boiler overheats, causing rapid vaporization which overwhelms the nozzle and leads to hot fluid molecules flowing back towards the vacuum chamber. Therefore, backstreaming increases, rather than stalling, oxidation or clogging that rely on different processes and chemical conditions.

• Which symptom indicates a failing capacitor in a three-phase induction motor drive circuit?
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• Which risk increases to substation circuitry when operating near parallel resonance between transformers’ inductive reactance and distribution cables’ capacitance?
• Which effect results when a hydraulic servo connected to a PLC experiences excessive derivative gain?
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• Which control problem introduces singularities during robot arm movements, affecting servo motor response?