For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is______________?

Related Mcqs:

In a forward feed multiple effect evaporator, the pressure is ____________________?

A. Highest in last effect B. Lowest in last effect C. Same in all effects D. Dependent on the number of effects...

Indirect contact heat exchangers are preferred over direct contact heat exchangers, because_________________?

A. Heat transfer co-efficient are high B. There is no risk of contamination C. There is no mist formation D. Cost of equipment is lower...

Which of the following has maximum thermal conductivity ?

A. Iron B. Coal C. Nitrogen D. Tar...

The rate of emission of radiation by a body does not depend upon the__________________?

A. Wavelength of radiation B. Surface temperature of the body C. Nature of the surface D. Shape and porosity of the body...

When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids ?

A. At high fluid velocity B. At low velocity C. When fluid flows past a smooth surface D. None of these...