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Heat and Mass Transfer

Heat and Mass Transfer
The amount of radiation mainly depends on

All of these
Type of surface of body
Temperature of body
Nature of body

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Heat and Mass Transfer
Planck’s law holds good for

All of these
all coloured bodies
black bodies
polished bodies

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Heat and Mass Transfer
The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as

Radiation
Conduction
Forced convection
Free convection

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Heat and Mass Transfer
Which of the following has maximum value of thermal conductivity?

Steel
Aluminium
Brass
Copper

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Heat and Mass Transfer
Depending on the radiating properties, a body will be white when (Where a = absorptivity, p = reflectivity, x = transmissivity)

X = 0, a + p = 1
P = 0, x = 0 and a = 1
P = 0, x = 1 and a = 0
P=1, T = 0 and a = 0

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

Conduction
Convection
Conduction and convection
Radiation

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MORE MCQ ON Heat and Mass Transfer

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