Heat Transfer Which of the following has the lowest overall heat transfer co-efficient? Water Dowtherm Molten sodium Air Water Dowtherm Molten sodium Air ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Maximum heat transfer rate is obtained in __________ flow. Turbulent Transition region Creeping Laminar Turbulent Transition region Creeping Laminar ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always < 1 1 ∞ > 1 < 1 1 ∞ > 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nucleate boiling is promoted On polished surfaces On rough surfaces None of these In the absence of agitation On polished surfaces On rough surfaces None of these In the absence of agitation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium. This is __________ law. Planck's Wien's displacement Stefan-Boltzman Kirchoffs Planck's Wien's displacement Stefan-Boltzman Kirchoffs ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a perfectly transparent surface (like gases), the Transmissivity = 1 All of these Absorptivity = 0 Reflectivity = 0 Transmissivity = 1 All of these Absorptivity = 0 Reflectivity = 0 ANSWER DOWNLOAD EXAMIANS APP
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