A. Cumulatively increases
B. Cumulatively decreases
C. Remain constant
D. And the surface conductance increase
A. Black
B. White lead
C. Grey
D. Light cream
_____________ paint has the minimum absorption co-efficient? Read More »
Chemical Heat Transfer A. Increases
B. Decreases
C. Remain constant
D. Passes through a maxima
A. Radiation
B. Natural convection
C. Forced convection
D. Conduction
A. Condense steam
B. Release excess steam pressure by bleeding steam
C. Remove condensate and inert gases
D. None of these
Steam traps are provided in steam carrying pipelines to_________________? Read More »
Chemical Heat Transfer A. Total
B. Monochromatic
C. Both A. & B.
D. Neither A. nor B.
Kirchoff‟s law applies to _____________ radiation? Read More »
Chemical Heat Transfer A. Heat transfer co-efficient over the entire heat exchanger is not constant
B. There exists an unsteady state
C. The heat capacity is not constant and there is a phase change
D. None of these
Log mean temperature difference (LMTD) cannot be used, if ___________________? Read More »
Chemical Heat Transfer A. Minimum
B. Maximum
C. Zero
D. Infinity
A. In the central core of the fluid
B. Uniformly distributed throughout the fluid
C. Mainly confined to a thin film of fluid near the surface
D. None of these
A. Thermal boundary layer lies inside the concentration boundary layer
B. Concentration boundary layer lies inside the thermal boundary layer
C. Thermal & concentration boundary layers are of equal thickness
D. Hydrodynamic (i.e., momentum) boundary layer is thicker than the other two
If Prandtl number is greater than the Schmidt number, then the____________________? Read More »
Chemical Heat Transfer