Heat and Mass Transfer The critical thickness of insulation for a sphere is k/h₀ h₀/2k h₀/k 2k/h₀ k/h₀ h₀/2k h₀/k 2k/h₀ ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In heat exchangers, degree of approach is defined as the difference between temperatures of Hot medium outlet and cold water inlet Hot medium inlet and outlet Hot medium outlet and cold water outlet Cold water inlet and outlet Hot medium outlet and cold water inlet Hot medium inlet and outlet Hot medium outlet and cold water outlet Cold water inlet and outlet ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A cube at high temperature is immersed in a constant temperature bath. It loses heat from its top, bottom and side surfaces with heat transfer coefficients of h₁, h₂ and h₃ respectively. The average heat transfer coefficient for the cube is None of these 1/h₁ + 1/h₂ + 1/h₃ (h₁.h₂.h₃)1/3 h₁ + h₂ + h₃ None of these 1/h₁ + 1/h₂ + 1/h₃ (h₁.h₂.h₃)1/3 h₁ + h₂ + h₃ ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following is expected to have highest thermal conductivity? Water Solid ice Steam Melting ice Water Solid ice Steam Melting ice ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Which of the following is a case of steady state heat transfer? None of these I.C. engine Air preheaters Heating of building in winter None of these I.C. engine Air preheaters Heating of building in winter ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat transfer takes place as per Second law of the thermodynamics First law of thermodynamic Zeroth law of thermodynamics Kirchoff's law Second law of the thermodynamics First law of thermodynamic Zeroth law of thermodynamics Kirchoff's law ANSWER DOWNLOAD EXAMIANS APP
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