Heat Transfer Critical value of the __________ number governs the transition from laminar to turbulent flow in free convection heat transfer. Grashoff Both A & B Prandtl & Grashoff Reynolds Grashoff Both A & B Prandtl & Grashoff Reynolds ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reynold's analogy states that (where, St = Stanton number f = friction factor) St = f/4 St = f1/2 St = f/2 St = 4f St = f/4 St = f1/2 St = f/2 St = 4f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? 0.5 < 0.5 > 0.6 < 0.1 0.5 < 0.5 > 0.6 < 0.1 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 tempeature follows __________ law. Parabolic Linear Logarithmic Hyperbolic Parabolic Linear Logarithmic Hyperbolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the geometric mean of two heat transfer areas A₁ and A₂ ? √(A₁ + A₂) √(A₁ . A₂) 2 √(A₁ . A₂) 1/2 √(A₁ . A₂) √(A₁ + A₂) √(A₁ . A₂) 2 √(A₁ . A₂) 1/2 √(A₁ . A₂) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For gases, the thermal conductivity increases with temperature rise. For liquids, with increase in concentration, its thermal conductivity generally Decreases Increases Increases exponentially Remains unchanged Decreases Increases Increases exponentially Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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