Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. Increases Decreases Remains constant May increase or decrease ; depends on the material Increases Decreases Remains constant May increase or decrease ; depends on the material ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as (D)1.8 (D)-1.8 (D)-0.2 (D)0.2 (D)1.8 (D)-1.8 (D)-0.2 (D)0.2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that There is no internal heat generation Boundary surfaces are isothermal Constant temperature gradient exists Material is anisotropic There is no internal heat generation Boundary surfaces are isothermal Constant temperature gradient exists Material is anisotropic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam consumption in kg/hr in case of an evaporator is given by (where, C & E are capacity the economy of the evaporator respectively) CE C/E E/C 1/CE CE C/E E/C 1/CE ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fruit juice (a heat sensitive material) can be concentrated in a __________ evaporator. High pressure Falling film None of these Long tube High pressure Falling film None of these Long tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The ratio of velocity head to tube side return loss in case of a multipass shell and tube heat exchanger is 43832 4 2 43834 43832 4 2 43834 ANSWER DOWNLOAD EXAMIANS APP
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