Heat Transfer Graetz number is given by kμ/mCp mCp/kμ kL/mCp mCp/kL kμ/mCp mCp/kμ kL/mCp mCp/kL ANSWER DOWNLOAD EXAMIANS APP
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 All bodies Black painted bodies only Polished bodies only A black body All bodies Black painted bodies only Polished bodies only A black body ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally Increases exponentially Remains unchanged Decreases Increases Increases exponentially Remains unchanged Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiator of an automobile engine is a __________ type of heat exchanger. Direct contact Counter-current Co-current Cross-current Direct contact Counter-current Co-current Cross-current ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius 'r' of insulation on a pipe is given by r = 2k/h r = h/k r = k/2h r = k/h r = 2k/h r = h/k r = k/2h r = k/h ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is Nu = 0.023 Re0.8 . Pr0.4 Nu = Gz Nu = 2Gz0.5 Nu = Gz Nu = 0.023 Re0.8 . Pr0.4 Nu = Gz Nu = 2Gz0.5 Nu = Gz ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS