Heat and Mass Transfer A non-dimensional number generally associated with natural convection heat transfer is Grashoff number Weber number Nusselt number Prandtl number Grashoff number Weber number Nusselt number Prandtl number ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In case of liquids and gases, the heat transfer takes place according to Radiation Convection Conduction None of these Radiation Convection Conduction None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of heat flow through a body is Q = [kA (T₁ - T₂)]/x. The term x/kA is known as Thermal conductivity Thermal coefficient Thermal resistance None of these Thermal conductivity Thermal coefficient Thermal resistance None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The critical thickness of insulation for a sphere is 2k/h₀ k/h₀ h₀/2k h₀/k 2k/h₀ k/h₀ h₀/2k h₀/k ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer When absorptivity (α) = 1, reflectivity (ρ) = 0 and transmissivity (τ) = 0, then the body is said to be a Grey body White body Opaque body Black body Grey body White body Opaque body Black body ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Metals are good conductors of heat because They contain free electrons Their atoms collide frequently They have high density Their atoms are relatively far apart They contain free electrons Their atoms collide frequently They have high density Their atoms are relatively far apart ANSWER DOWNLOAD EXAMIANS APP
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