Which risk increases when airflow velocity exceeds design limits within a venturi nozzle?

💡 Explanation

Flow separation occurs with excessive velocity due to the adverse pressure gradient overcoming the fluid's momentum. This is because viscous effects near the wall cause the boundary layer to thicken; therefore separation ensues and drag increases rather than orderly flow.

• Which outcome occurs when an avalanche photodiode's (APD) silicon crystal exceeds its bias threshold?
• Which risk significantly increases when the junction temperature in a silicon-based transistor approaches its absolute limit?
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• Which risk increases when distributed generation injects harmonics into a power grid?