Heat Transfer Unsteady state heat conduction occurs, when Temperature distribution is independent of time Three dimensional heat flow is concerned Temperature distribution is dependent on time Heat flows in one direction only Temperature distribution is independent of time Three dimensional heat flow is concerned Temperature distribution is dependent on time Heat flows in one direction only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which one gives the monochromatic emissive power for black body radiation ? Kirchhoffs law Stefan-Boltzman law Wien's law Planck's law Kirchhoffs law Stefan-Boltzman law Wien's law Planck's law ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A long iron rod initially at a temperature of 20°C has one end dipped in boiling water (100°C) at time, t = 0. The curved surface of the rod is insulated so that heat conduction is one dimensional in the axial direction. The temperature at a distance 100 mm from the dipped end becomes 40°C at time, t = 200 s. The same temperature is achieved at a distance of 200 mm from the dipped end at time t = 283 s t = 356 s t = 800 s t = 400 s t = 283 s t = 356 s t = 800 s t = 400 s ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a perfectly transparent surface (like gases), the All of these Absorptivity = 0 Reflectivity = 0 Transmissivity = 1 All of these Absorptivity = 0 Reflectivity = 0 Transmissivity = 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point of a solution according to Duhring's rule is a linear function of the __________ of water. Thermal conductivity Boiling point (at the same pressure) Density Viscosity Thermal conductivity Boiling point (at the same pressure) Density Viscosity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l05 3 x l08 3 x l010 3 x l012 3 x l05 3 x l08 3 x l010 3 x l012 ANSWER DOWNLOAD EXAMIANS APP
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