Heat Transfer With increase in temperature, the total emissivity of conductors Decreases Decreases linearly Remains same Increases Decreases Decreases linearly Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the geometric mean of two heat transfer areas A₁ and A₂ ? 2 √(A₁ . A₂) 1/2 √(A₁ . A₂) √(A₁ + A₂) √(A₁ . A₂) 2 √(A₁ . A₂) 1/2 √(A₁ . A₂) √(A₁ + A₂) √(A₁ . A₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in porosity, the thermal conductivity of a solid substance May increase or decrease; depends on the solid Remains unchanged Increases Decreases May increase or decrease; depends on the solid Remains unchanged Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Natural convection is characterised by Reynolds number Prandtl number Grashhoff number Peclet number Reynolds number Prandtl number Grashhoff number Peclet number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer (NRe.NPr)(D/L) is called the __________ number None of these Graetz Stanton Peclet None of these Graetz Stanton Peclet 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 temperature follows __________ law. Logarithmic Linear Parabolic Hyperbolic Logarithmic Linear Parabolic Hyperbolic ANSWER DOWNLOAD EXAMIANS APP
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