Heat Transfer In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is Maximum Infinity Minimum Zero Maximum Infinity Minimum Zero ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l010 3 x l08 3 x l05 3 x l012 3 x l010 3 x l08 3 x l05 3 x l012 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiation energy is emitted by all the substances, which are above 0°C 100°C none of the listed here 0°K 0°C 100°C none of the listed here 0°K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Log mean temperature difference (LMTD) cannot be used, if none of the listed here there exists an unsteady state heat transfer co-efficient over the entire heat exchanger is not constant the heat capacity is not constant and there is a phase change. none of the listed here there exists an unsteady state heat transfer co-efficient over the entire heat exchanger is not constant the heat capacity is not constant and there is a phase change. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Natural convection is characterised by Peclet number Prandtl number Grashhoff number Reynolds number Peclet number Prandtl number Grashhoff number Reynolds number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchangers operating, when the asymptotic range is reached, Results in abruptly increased velocity Provide very large heat transfer co-efficient Results in making part of the heating surface inactive None of these Results in abruptly increased velocity Provide very large heat transfer co-efficient Results in making part of the heating surface inactive None of these ANSWER DOWNLOAD EXAMIANS APP
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