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Heat and Mass Transfer

Heat and Mass Transfer
The amount of radiation mainly depends on

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

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Heat and Mass Transfer
In case of liquids and gases, the heat transfer takes place according to

Conduction
None of these
Radiation
Convection

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Heat and Mass Transfer
The product of Reynolds number and Prandtl number is known as

Biot number
Peclet number
Stanton number
Grashoff number

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

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

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Heat and Mass Transfer
The rate of energy transferred by convection to that by conduction is called

Stanton number
Nusselt number
Biot number
Peclet number

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Heat and Mass Transfer
The heat is transferred by conduction, convection and radiation in

Boiler furnaces
None of these
Melting of ice
Condensation of steam in condenser

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