Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. Decreases Increases Remains constant May increase or decrease ; depends on the material Decreases Increases Remains constant May increase or decrease ; depends on the material ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a body is equal to its emissivity at a particular temperature none of the listed here under thermal equilibrium for circular bodies at a particular temperature none of the listed here under thermal equilibrium for circular bodies ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 2-4 heat exchanger involves Smaller pressure drop compared to 1-2 exchanger Only counter-flow of fluids Only parallel-flow of fluids Both counter and parallel-flow of the fluids Smaller pressure drop compared to 1-2 exchanger Only counter-flow of fluids Only parallel-flow of fluids Both counter and parallel-flow of the fluids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation. Greater than Is same as Half Lower than Greater than Is same as Half Lower than ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Stefen's block body radiation law can also be derived from __________ law. None of these Kirchoffs Fourier's Planck's None of these Kirchoffs Fourier's Planck's ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl and Reynolds analogy are same, when Prandtl number is 0.5 1 > 2 1.5 0.5 1 > 2 1.5 ANSWER DOWNLOAD EXAMIANS APP
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