Virtual Labs

The Convective heat transfer coefficient in case of fluid flowing in the tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone

a: Laminar Explanation

Explanation

b: Transition Explanation

Explanation

c: Both 'a' & 'b' Explanation

Explanation

d: Highly turbulent Explanation

Explanation

Bulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is

a: In the central core of the fluid. Explanation

Explanation

b: Uniformly distributed throughout the fluid. Explanation

Explanation

c: Mainly confined to a to a thin film of fluid near the surface Explanation

Explanation

d: None of these Explanation

Explanation

Mark the system where heat transfer is given by forced convection

a: Chilling effect of cold wind on warm body Explanation

Explanation

b: Fluid passing through the tubes of a condenser and other heat exchange equipment Explanation

Explanation

c: Heat flow from a hot pavement to surrounding atmosphere Explanation

Explanation

d: Heat exchange on the outside of cold and warm pipes Explanation

Explanation

Forced convection in a liquid bath is caused by?

a: Intense stirring by an external agency Explanation

Explanation

b: Molecular energy interactions Explanation

Explanation

c: Density difference brought about by temperature gradients Explanation

Explanation

d: Flow of electrons in a random fashion Explanation

Explanation

Examples of forced convection are using water heaters or geysers for instant heating of water.

a: True Explanation

Explanation

b: False Explanation

Explanation

c: Can be true or false Explanation

Explanation

d: None of the above Explanation

Explanation

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