Heat Transfer Shell side pressure drop in a shell and tube heat exchanger does not depend upon the None of these Viscosity, density & mass velocity of shell side fluid Baffle spacing & shell diameter Tube diameter & pitch None of these Viscosity, density & mass velocity of shell side fluid Baffle spacing & shell diameter Tube diameter & pitch ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Giving the surface a mirror finish Painting the surface black Roughening the surface Painting the surface white (with aluminium paint) Giving the surface a mirror finish Painting the surface black Roughening the surface Painting the surface white (with aluminium paint) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as None of these Q ∝ T² Q ∝ T⁴ Q ∝ T³ None of these Q ∝ T² Q ∝ T⁴ Q ∝ T³ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Fourier's law, the proportionality constant is called the Stefan-Boltzman constant Thermal conductivity Heat transfer co-efficient Thermal diffusivity Stefan-Boltzman constant Thermal conductivity Heat transfer co-efficient Thermal diffusivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires Less heating surface Lower maintenance cost None of these More space Less heating surface Lower maintenance cost None of these More space ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If Prandtl number is greater than the Schmidt number, then the thermal & concentration boundary layers are of equal thickness none of the listed here concentration boundary layer lies inside the thermal boundary layer thermal boundary layer lies inside the concentration boundary layer thermal & concentration boundary layers are of equal thickness none of the listed here concentration boundary layer lies inside the thermal boundary layer thermal boundary layer lies inside the concentration boundary layer ANSWER DOWNLOAD EXAMIANS APP
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