Heat Transfer With increase in temperature, the thermal conductivity of a gas Increases Decreases Remains same May increase or decrease depending on the type of gas Increases Decreases Remains same May increase or decrease depending on the type of gas 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 2.36 120.36 4.36 Dependent on NRe only 2.36 120.36 4.36 Dependent on NRe only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 0.001 to 1 0.6 to 120 120 to 400 0.5 to 5 0.001 to 1 0.6 to 120 120 to 400 0.5 to 5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As per Kirchoffs law, the ratio of the total radiating power to the absorptivity of a body depends on the nature of material of body temperature of the body only wavelength of monochromatic radiation none of the listed here nature of material of body temperature of the body only wavelength of monochromatic radiation none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Indirect contact heat exchangers are preferred over direct contact heat exchangers, because There is no mist formation There is no risk of contamination Heat transfer co-efficient are high Cost of equipment is lower There is no mist formation There is no risk of contamination Heat transfer co-efficient are high Cost of equipment is lower ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For small temperature difference, the heat transfer rate as per Newton's law of cooling is proportional to (where, Δt = excess temperature) √Δt Δt Δt³ Δt² √Δt Δt Δt³ Δt² ANSWER DOWNLOAD EXAMIANS APP
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