Heat Transfer The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature) (ΔT)⁴ (ΔT)² (ΔT)³ √(ΔT) (ΔT)⁴ (ΔT)² (ΔT)³ √(ΔT) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that Boundary surfaces are isothermal Material is anisotropic Constant temperature gradient exists There is no internal heat generation Boundary surfaces are isothermal Material is anisotropic Constant temperature gradient exists There is no internal heat generation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube heat exchanger, square pitch compared to triangular pitch Can pack more surface area into a shell of given diameter None of these Gives a higher shell side pressure drop Gives a lower shell side pressure drop Can pack more surface area into a shell of given diameter None of these Gives a higher shell side pressure drop Gives a lower shell side pressure drop ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The average heat transfer co-efficient for laminar film condensation on vertical surface is inversely proportional to (where, ΔT = Temperature drop across condensate film ) None of the listed here ΔT (ΔT)1/4 (ΔT)2 None of the listed here ΔT (ΔT)1/4 (ΔT)2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ∝ t ∝ 1/t Independent of 't' ∝ √t ∝ t ∝ 1/t Independent of 't' ∝ √t ANSWER DOWNLOAD EXAMIANS APP
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 R₂/(R₁+R₂) (R₁/R₂)2 1 R₂/(R₁+R₂) (R₁/R₂)2 1 ANSWER DOWNLOAD EXAMIANS APP
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