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Heat and Mass Transfer

Heat and Mass Transfer
The radiation emitted by a black body is known as

Black radiation
Full radiation
Total radiation
All of these

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Heat and Mass Transfer
Heat transfer takes place as per

Second law of the thermodynamics
Kirchoff's law
First law of thermodynamic
Zeroth law of thermodynamics

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Heat and Mass Transfer
A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as

Cmin/U
U/Cmin
U/A.Cmin
U.Cmin

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Heat and Mass Transfer
Temperature of steam at around 540°C can be measured by

Thermometer
Thermocouple
Thermistor
None of these

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Heat and Mass Transfer
The amount of heat flow through a body by conduction is

Dependent upon the material of the body
Directly proportional to the temperature difference on the two faces of the body
Directly proportional to the surface area of the body
All of these

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Heat and Mass Transfer
The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is

Equal to Nusselt number
Equal to one
Greater than one
Less than one

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