Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T² Q ∝ T³ None of these Q ∝ T⁴ Q ∝ T² Q ∝ T³ None of these Q ∝ T⁴ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by Enhancing the fluid pumping rate Keeping the heat transfer surface clean None of these Increasing the tube length Enhancing the fluid pumping rate Keeping the heat transfer surface clean None of these Increasing the tube length ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Absorptivity and refletivity of a perfect black body are respectively 0 and 0.5 0 and 1 1 and 0 1 and ? 0 and 0.5 0 and 1 1 and 0 1 and ? ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Shell side pressure drop in a shell and tube heat exchanger does not depend upon the Baffle spacing & shell diameter Viscosity, density & mass velocity of shell side fluid Tube diameter & pitch None of these Baffle spacing & shell diameter Viscosity, density & mass velocity of shell side fluid Tube diameter & pitch None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux, as defined in heat flow is analogous to __________ in electricity flow. Resistance None of these Voltage Current Resistance None of these Voltage Current ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the highest thermal conductivity ? Black Silver Air Water Black Silver Air Water ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS