Heat Transfer What is the geometric mean of two heat transfer areas A₁ and A₂ ? √(A₁ + A₂) 1/2 √(A₁ . A₂) √(A₁ . A₂) 2 √(A₁ . A₂) √(A₁ + A₂) 1/2 √(A₁ . A₂) √(A₁ . A₂) 2 √(A₁ . A₂) 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 Hyperbolic Parabolic Logarithmic Linear Hyperbolic Parabolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For turbulent flow in a tube, the heat transfer co-efficient is obtained from the Dittus-Boelter correlation. If the tube diameter is halved and the flow rate is doubled, then the heat transfer co-efficient will change by a factor of 1.74 37 1 6.1 1.74 37 1 6.1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the Minimum resistance presents in the series Average of all resistances Maximum resistance in the series Sum of all resistances Minimum resistance presents in the series Average of all resistances Maximum resistance in the series Sum of all resistances ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator. May increase or decrease, depends on the vacuum Remains constant Decreases Increases May increase or decrease, depends on the vacuum Remains constant Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivities of most of the liquids __________ with rise in temperature. Remains unchanged Increases May increase or decrease; depends on the liquid Decreases Remains unchanged Increases May increase or decrease; depends on the liquid Decreases ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS