Heat Transfer A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number. Condensation Grashoff Brinkman Stantan Condensation Grashoff Brinkman Stantan ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum thermal conductivity? Nitrogen Carbon black Tar Steel Nitrogen Carbon black Tar Steel ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A composite flat wall of a furnace is made of two materials 'A' and 'B'. The thermal conductivity of 'A' is twice of that of material 'B', while the thickness of layer of 'A' is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material 'A' is 125 133 150 160 125 133 150 160 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Grashhoff number is given by gD³.β.Δtρ²/μ² gD2βΔtP²μ gD2βΔtρ/μ² gD³βΔtP²/μ gD³.β.Δtρ²/μ² gD2βΔtP²μ gD2βΔtρ/μ² gD³βΔtP²/μ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer Increases Decreases Increases exponentially Remains unaffected Increases Decreases Increases exponentially Remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally Decreases Increases exponentially Increases Remains unchanged Decreases Increases exponentially Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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