Heat Transfer An insulator should have Less resistance to heat flow A porous structure High thermal conductivity Low thermal conductivity Less resistance to heat flow A porous structure High thermal conductivity Low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 120 to 400 0.6 to 120 0.001 to 1 0.5 to 5 120 to 400 0.6 to 120 0.001 to 1 0.5 to 5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. Decreases Increases May increase or decrease ; depends on the material Remains constant Decreases Increases May increase or decrease ; depends on the material Remains constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is 4.36 2.36 120.36 Dependent on NRe only 4.36 2.36 120.36 Dependent on NRe only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam trap is used to Stop the supply of steam Condense the steam flowing in the pipeline Remove water resulting from partial condensation of steam None of these Stop the supply of steam Condense the steam flowing in the pipeline Remove water resulting from partial condensation of steam None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. Remain unchanged May increase or decrease; depends on the pressure Increase Decrease Remain unchanged May increase or decrease; depends on the pressure Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
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