Heat Transfer The thermal boundary layer at NPr > 1 Disappears And the hydrodynamic boundary layer are identical Is thicker than hydrodynamic boundary layer Is thinner than hydrodynamic boundary layer Disappears And the hydrodynamic boundary layer are identical Is thicker than hydrodynamic boundary layer Is thinner than hydrodynamic boundary layer ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is concerned with both heat and mass transfer ? Froude number Kutateladze number Lewis relationship Nusselt number Froude number Kutateladze number Lewis relationship Nusselt number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Stefan-Boltzman constant depends on the Medium Surface Temperature None of these Medium Surface Temperature None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The main purpose of providing fins on heat transfer surface is to increase the Heat transfer co-efficient Temperature gradient Heat transfer area Mechanical strength of the equipment Heat transfer co-efficient Temperature gradient Heat transfer area Mechanical strength of the equipment ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For turbulent flow in a tube, the heat transfer co-efficient is obtained from the Dittus-Boelter correlation. If the tube diameter is halved and the flow rate is doubled, then the heat transfer co-efficient will change by a factor of 6.1 1 37 1.74 6.1 1 37 1.74 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal diffusivity of a material All of these Has the unit m² /sec Is the ratio of thermal conductivity to thermal capacity Is defined as K/ρ . Cp All of these Has the unit m² /sec Is the ratio of thermal conductivity to thermal capacity Is defined as K/ρ . Cp ANSWER DOWNLOAD EXAMIANS APP
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