Which outcome occurs when a positive displacement pump handles a fluid with undissolved gas?

💡 Explanation

When undissolved gas enters a positive displacement pump, gas compression reduces the effectively displaced liquid volume because the gas compresses more easily than liquid. Thus, volumetric efficiency plummets as some chamber volume only compresses gas. Therefore volumetric efficiency decreases drastically, rather than any thermal increase or maintained flow which require fully liquid/well-primed conditions.

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