Heat Transfer A sphere of radius 'R₁' is enclosed in a sphere of radius 'R₂'. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is (R₁/R₂)2 1 R₂/(R₁+R₂) (R₁/R₂)2 1 R₂/(R₁+R₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low Prandtl number thermal conductivity viscosity Grashoff number Prandtl number thermal conductivity viscosity Grashoff number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the equation Q = UAΔt; Δt is Logarithmic mean temperature difference Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference Logarithmic mean temperature difference Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference 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
Heat Transfer Maximum heat transfer rate is achieved in __________ flow. Counter-current Co-current Laminar Turbulent Counter-current Co-current Laminar Turbulent ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of __________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface. Nucleate Saturated Local Pool Nucleate Saturated Local Pool ANSWER DOWNLOAD EXAMIANS APP
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