21. Crystal size in a continuous crystalliser depends upon the
22. For heat flow through very thick walled cylinder, use____mean radius.
23. In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell)
24. Tube pitch is the __________ of tube diameters and the clearances.
25. The average heat transfer co-efficient for laminar film condensation on vertical surface is inversely proportional to (where, $$\Delta {\text{T}}$$ = Temperature drop across condensate film)
26. Multiple effect evaporators ar used to
27. Pick out the wrong statement.
28. Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because
29. For a laminar flow of fluid in a circular tube, 'h1' is the convective heat transfer co-efficient at velocity 'V1'. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is
30. If h₁ = inner film co-efficient and /h₂ = outer film co-efficient, then the overall heat transfer co-efficient is
Read More Section(Heat Transfer)
Each Section contains maximum 100 MCQs question on Heat Transfer. To get more questions visit other sections.