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Heat and Mass Transfer

Heat and Mass Transfer
The concept of overall coefficient of heat transfer is used in heat transfer problems of

Conduction
Conduction and convection
Radiation
Convection

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Heat and Mass Transfer
The heat transfer from a hot body to a cold body is directly proportional to the surface area and difference of temperatures between the two bodies. This statement is called

Newton's law of heating
First law of thermodynamics
Newton's law of cooling
Stefan's law

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Heat and Mass Transfer
Two balls of same material and finish have their diameters in the ratio of 2: 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of

0.043055555555556
0.084027777777778
0.042361111111111
0.16736111111111

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Heat and Mass Transfer
Sensible heat is the heat required to

Increase the temperature of a liquid of vapour
Change liquid into vapour
Change vapour into liquid
Convert water into steam and superheat it

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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

Radiation
Conduction
Convection
Conduction and convection

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Heat and Mass Transfer
Stefan Boltzmann law is applicable for heat transfer by

Radiation
Conduction and radiation combined
Convection
Conduction

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MORE MCQ ON Heat and Mass Transfer

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