Heat Transfer The thermal radiation emitted by a body is proportional to Tn, where T is its absolute temperature. The value of 'n' is exactly 4 for A black body Polished bodies only Black painted bodies only All bodies A black body Polished bodies only Black painted bodies only All bodies ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which one gives the monochromatic emissive power for black body radiation ? Kirchhoffs law Planck's law Wien's law Stefan-Boltzman law Kirchhoffs law Planck's law Wien's law Stefan-Boltzman law ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Asymptotic conditions is reached, when for a fluid flowing in laminar flow through a long tube Graetz number > 100 Exit fluid temperature = wall temperature Exit-fluid temperature > wall temperature Exit fluid temperature < wall temperature Graetz number > 100 Exit fluid temperature = wall temperature Exit-fluid temperature > wall temperature Exit fluid temperature < wall temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 1000 - 1500 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 50 -100 BTU/hr. ft.2°F 1000 - 1500 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 50 -100 BTU/hr. ft.2°F 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 none of the listed here temperature of the body only wavelength of monochromatic radiation nature of material of body none of the listed here temperature of the body only wavelength of monochromatic radiation nature of material of body ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is 0.5 0.4 0.7 0.6 0.5 0.4 0.7 0.6 ANSWER DOWNLOAD EXAMIANS APP
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