Heat Transfer Which one gives the monochromatic emissive power for black body radiation ? Stefan-Boltzman law Planck's law Wien's law Kirchhoffs law Stefan-Boltzman law Planck's law Wien's law Kirchhoffs law ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A diathermaneous substance __________ the thermal radiation completely. Reflects None of these Transmits Absorbs Reflects None of these Transmits Absorbs ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place Between two bodies in physical contact with each other Between two bodies not in physical contact with each other From one part of a body to the another part of the same body Both B & C Between two bodies in physical contact with each other Between two bodies not in physical contact with each other From one part of a body to the another part of the same body Both B & C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m².K. The Biot number is 0.025 3.5 5.6 0.0035 0.025 3.5 5.6 0.0035 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as Ha = 2hL Ha = 0.8hL Ha= 5hL Ha = hL Ha = 2hL Ha = 0.8hL Ha= 5hL Ha = hL ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, the hydrodynamic and thermal boundary layers of a fluid flowing over a heated plate will be identical? None of these > 1 1 < 1 None of these > 1 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
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