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Heat Transfer

Heat Transfer
jH factor for heat transfer depends upon the __________ number.

Nusselt
Biot
Reynolds
Prandtl

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Heat Transfer
When vaporisation takes place through a blanketting film of gas, the phenomenon is termed as __________ boiling.

film
transition
pool
none of the listed here

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Heat Transfer
Heat flux is the time rate of heat transfer per unit

none of the listed here
length
area
volume

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Heat Transfer
Water is normally used as a coolant in the heat exchange equipments mainly because ofits

Low density
Abundance & high heat capacity
Low viscosity
High fluidity

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Heat Transfer
Conductance is given by(where, x = thickness, A = heat flow area, K = thermal conductivity.)

KA/x
A/Kx
X/KA
K/Ax

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Heat Transfer
Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone.

transition
None of the listed here
laminar
highly turbulent

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MORE MCQ ON Heat Transfer

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