Heat Transfer In forced convection, the Nusselt number is a function of Pr and Gr Re and Sc Re and Pr Re and Gr Pr and Gr Re and Sc Re and Pr Re and Gr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Bulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is Uniformly distributed throughout the fluid In the central core of the fluid Mainly confined to a thin film of fluid near the surface None of these Uniformly distributed throughout the fluid In the central core of the fluid Mainly confined to a thin film of fluid near the surface None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a backward feed multiple effect evaporator Feed flows from low pressure to high pressure No pumps are required between successive effects Feed is introduced in the first effect None of these Feed flows from low pressure to high pressure No pumps are required between successive effects Feed is introduced in the first effect None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A black body does not __________ radiation. Both B & C Reflect Absorb or emit Refract Both B & C Reflect Absorb or emit Refract ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The absorptivity of a body is equal to its emissivity for circular bodies under thermal equilibrium none of the listed here at a particular temperature for circular bodies under thermal equilibrium none of the listed here at a particular temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m².°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be Less than the steam pipe with 5 cms insulation Equal to that of the uninsulated steam pipe Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Less than the steam pipe with 5 cms insulation Equal to that of the uninsulated steam pipe Less than that of the uninsulated steam pipe Greater than that for uninsulated steam pipe ANSWER DOWNLOAD EXAMIANS APP
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