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Heat and Mass Transfer

Heat and Mass Transfer
Unit of thermal conductivity in S.I. units is

Option (B) and (C) above
J/m² sec
J/m °K sec
W/m °K

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Heat and Mass Transfer
Radiation is the process of heat transfer in which heat flows from a ________, in a straight line, without affecting the intervening medium.

Smaller body to larger body
Cold body to hot body
Larger body to smaller body
Hot body to cold body

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Heat and Mass Transfer
According to Stefan's law, the total radiation from a black body per second per unit area is proportional to

Absolute temperature
T5
T2
T

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Heat and Mass Transfer
The ratio of Nusselt number and the product of Reynold's number and Prandtl number is equal to

Stanton number
Biot number
Peclet number
Grashoff number

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Heat and Mass Transfer
Pick up the wrong case. Heat flowing from one side to other depends directly on

Face area
Thickness
Time
Temperature difference

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Heat and Mass Transfer
When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by

Conduction
Convection
Radiation
Conduction and convection

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