Film condensation is promoted on a/an _______________________ surface?
Film condensation is promoted on a/an _______________________ surface?
A. Oily
B. Coated
C. Clean & smooth
D. Dirty
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In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always__________________?
In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always__________________?A. < 1
B. > 1
C. 1
D. ∞The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by ______________ times, when the number of tube passes is increased to 8?
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by ______________ times, when the number of tube passes is increased to 8?A. 20.8
B. 40.8
C. 40.4
D. 20.4In a forward feed multiple effect evaporator unit__________________?
In a forward feed multiple effect evaporator unit__________________?A. Viscosity of liquid is highest in first effect
B. Transfer from effect to effect is done by pumps
C. No pump is required to withdraw the product from the last effect
D. None of theseMechanical recompression evaporation is used in the production of____________________?
Mechanical recompression evaporation is used in the production of____________________?A. Alcohol
B. Distilled water
C. Salt
D. Fruits jamThe Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter D. as _________________?
The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter D. as _________________?A. D-1.8
B. D-0.2
C. D0.2
D. D1.8With increase in temperature, the thermal conductivity of most liquids_________________?
With increase in temperature, the thermal conductivity of most liquids_________________?A. Increases
B. Decreases
C. Remain same
D. First increases upto a certain temperature and then becomes constant