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WorksheetsHeat Transfer Lab Viva
Total questions: 10
Worksheet time: 5mins
The Unit of thermal Conductivity k is
w/m2 k
w/m k
w/m2 0C
w/m2
The value of stefan-Boltzmann constant is
5.67 x 10-8 w/m2 k4
56.7 x 10-8 w/m2 k4
5.067x 10-8 w/m2 k
5.067x 10-8 w/m k
The Emissivity of black body is
1
0.8
0
0.6
The unit of the rate of Heat transfer is
Joule
Newton
pascal
watt
Convective heat transfer coefficient does not depend on
Surface area
Space
Time
Orientation solid surface
Thermal conductivity is maximum for which substance
Silver
Ice
Aluminum
Diamond
Heat transfer takes place as per
Zeroth Law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
kirchoff's Law
When heat is transferred by molecular collision is referred to as heat transfer by
Conduction
Convection
Radiation
Convection and radiation
Heat Transfer by radiation mainly depends upon
Its temperature
Nature of the body
Kind and extent of its surface
All of the above
LMTD In case of counter flow Heat exchanger as compared to parallel flow heat exchanger is
Higher
Lower
Same
Depends on the area of the heat exchanger
