Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? At low velocity When fluid flows past a smooth surface None of these At high fluid velocity At low velocity When fluid flows past a smooth surface None of these At high fluid velocity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If heat transfer rate varies with the time, it is termed as None of these Forced convection Monochromatic radiation Steady state conduction None of these Forced convection Monochromatic radiation Steady state conduction ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Controlling heat transfer film co-efficient is the one, which offers __________ resistance to heat transfer. the largest no lower the least the largest no lower the least ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun? Black paint White paint Yellow paint Grey paint Black paint White paint Yellow paint Grey paint ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be More than 45°C Equal to 45°C Less than 45°C Initially decreases and remains constant thereafter More than 45°C Equal to 45°C Less than 45°C Initially decreases and remains constant thereafter ANSWER DOWNLOAD EXAMIANS APP
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 Zero Infinity Minimum Maximum Zero Infinity Minimum ANSWER DOWNLOAD EXAMIANS APP
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