Heat Transfer An insulator should have Less resistance to heat flow High thermal conductivity Low thermal conductivity A porous structure Less resistance to heat flow High thermal conductivity Low thermal conductivity A porous structure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer __________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side. None of these Single pass, fixed tube sheet Three pass, fixed tube sheet U-tube None of these Single pass, fixed tube sheet Three pass, fixed tube sheet U-tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius 'r' of insulation on a pipe is given by r = 2k/h r = k/2h r = k/h r = h/k r = 2k/h r = k/2h r = k/h r = h/k ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body) α 1/T αT Independent of T α T⁴ α 1/T αT Independent of T α T⁴ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is Hyperbolic None of these Linear Parabolic Hyperbolic None of these Linear Parabolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m².K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m².K. The overall heat transfer co-efficient at this time is 894W/m².K 333W/m².K 1200W/m².K 287 W/m².K 894W/m².K 333W/m².K 1200W/m².K 287 W/m².K ANSWER DOWNLOAD EXAMIANS APP
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