Heat Transfer If heat transfer rate varies with the time, it is termed as Forced convection Steady state conduction Monochromatic radiation None of these Forced convection Steady state conduction Monochromatic radiation None of these 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 Parabolic Linear Hyperbolic None of these Parabolic Linear Hyperbolic None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Double pipe heat exchangers are used because it occupies less floor area when heat transfer area required is very high when heat transfer area required is very low because it is less costly because it occupies less floor area when heat transfer area required is very high when heat transfer area required is very low because it is less costly ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Stefan-Boltzman constant depends on the Surface Temperature None of these Medium Surface Temperature None of these Medium ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe whose surface temperature remains constant is Dependent on NRe only 1.66 88.66 3.66 Dependent on NRe only 1.66 88.66 3.66 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 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) Roughening the surface ANSWER DOWNLOAD EXAMIANS APP
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