Heat Transfer The rate of heat transfer is a product of overall heat transfer co-efficient, the difference in temperature and the None of these Heat transfer area Nusselt number Heating volume None of these Heat transfer area Nusselt number Heating volume ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation of steam on cooling surface is promoted None of these Only in presence of air An oily surface When both the steam and the tube are clean None of these Only in presence of air An oily surface When both the steam and the tube are clean ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl number is the reciprocal of Mass diffusivity x Momentum diffusivity Thermal diffusivity x Momentum Thermal diffusivity/Momentum diffusivity Thermal diffusivity x Mass diffusivity Mass diffusivity x Momentum diffusivity Thermal diffusivity x Momentum Thermal diffusivity/Momentum diffusivity Thermal diffusivity x Mass diffusivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Harmonic mean temperature difference is given by √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low viscosity Prandtl number Grashoff number thermal conductivity viscosity Prandtl number Grashoff number thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C. 4.88 1 1.49 None of these 4.88 1 1.49 None of these ANSWER DOWNLOAD EXAMIANS APP
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