Heat Transfer Which of the following has the minimum thermal conductivity? Nitrogen Steel Carbon black Tar Nitrogen Steel Carbon black Tar ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius 'r' of insulation on a pipe is given by r = k/h r = h/k r = k/2h r = 2k/h r = k/h r = h/k r = k/2h r = 2k/h ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is L >1 0.1 < 1 L >1 0.1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Finned tube heat exchangers give larger area per tube are used for smaller heat load use metal fins of low thermal conductivity facilitate very large temperature drop through tube wall give larger area per tube are used for smaller heat load use metal fins of low thermal conductivity facilitate very large temperature drop through tube wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T² Q ∝ T⁴ Q ∝ T³ None of these Q ∝ T² Q ∝ T⁴ Q ∝ T³ None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The non-dimensional temperature gradient in a liquid at the wall of a pipe is the Prandtl number Heat flux Nusselt number Schmidt number Prandtl number Heat flux Nusselt number Schmidt number ANSWER DOWNLOAD EXAMIANS APP
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