Heat Transfer The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe ) hi/K 2hi/K 2K/h0 K/h0 hi/K 2hi/K 2K/h0 K/h0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law. Linear Hyperbolic Logarithmic Parabolic Linear Hyperbolic Logarithmic Parabolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The statement that "maximum wavelength of radiation is inversly proportional to the temperature" is __________ law. Wien's displacement Stefan-Boltzman's Planck's None of these Wien's displacement Stefan-Boltzman's Planck's None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nusselt number is the ratio of the None of these Temperature difference to the temperature gradient at the wall Temperature gradient of the wall to that across the entire pipe Heat flux at the wall to that across the entire pipe None of these Temperature difference to the temperature gradient at the wall Temperature gradient of the wall to that across the entire pipe Heat flux at the wall to that across the entire pipe 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 Roughening the surface Painting the surface black Giving the surface a mirror finish Painting the surface white (with aluminium paint) Roughening the surface Painting the surface black Giving the surface a mirror finish Painting the surface white (with aluminium paint) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If heat transfer rate varies with the time, it is termed as Forced convection None of these Monochromatic radiation Steady state conduction Forced convection None of these Monochromatic radiation Steady state conduction ANSWER DOWNLOAD EXAMIANS APP
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