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Are Propellers and Impellers different in function from each other?

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in Bioprocess Engineering by (80.7k points)
Are Propellers and Impellers different in function from each other?

(a) True

(b) False

This question was posed to me in an internship interview.

Question is from Mixing topic in division Fluid Flow and Mixing of Bioprocess Engineering

1 Answer

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Correct answer is (a) True

The explanation: Propellers commonly refer to devices which move an attached object. For example, a ship’s propeller moves the ship itself forward or backward. Impellers, on the other hand, are designed to move the substance — fluid or gas passing through it without moving the object it is attached to.

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