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In __________, fluid is forced to flow over a surface or in a tube by external means.

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in Food Processing Unit Operations by (110k points)
In __________, fluid is forced to flow over a surface or in a tube by external means.

(a) natural convection

(b) forced convection

(c) conduction

(d) radiation

I have been asked this question by my college professor while I was bunking the class.

This question is from Heat Convection topic in section Heat Transfer Theory of Food Processing Unit Operations

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The correct choice is (b) forced convection

Best explanation: Forced convection is a mechanism of heat transfer in which fluid motion is produced by an external source such as ceiling fan, a pump and suction device. It creates uniform and comfortable temperature throughout the medium.

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