Main application of positive displacement pump is in which of the following?(a) Low viscosity products(b) Heavily aerated liquids(c) Gentle treatment with high viscosity(d) Water treatmentThis question was posed to me by my college professor while I was bunking the class.My question is taken from Pumps topic in section Building Blocks of Dairy Processing of Dairy Engineering

Main application of positive displacement pump is in which of the foll

1.	Main application of positive displacement pump is in which of the following?(a) Low viscosity products(b) Heavily aerated liquids(c) Gentle treatment with high viscosity(d) Water treatmentThis question was posed to me by my college professor while I was bunking the class.My question is taken from Pumps topic in section Building Blocks of Dairy Processing of Dairy Engineering
Answer» Correct choice is (c) GENTLE treatment with high viscosity Best explanation: This type of pump has 100% volumetric efficiency (no slip) when the viscosity exceeds approximately 300 CP. Because of the SANITARY design and the gentle treatment of the product, this type of pump is widely used for pumping cream with a high fat content, CULTURED milk products, curd/whey mixtures, etc.

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