In case of heat transfer by conduction in a hollow cylinder, ______________ mean area is used to calculate the heat transfer rate?

Related Mcqs:

Pick out the wrong statement?

A. Swenson-Walker crystalliser is a batch crystalliser B. Super saturation of the solution is the driving potential for a crystal growth C. The liquor left after the removal of crystals from a solution is called mother liquor D. The first stage of crystal formation is called nucleation...

Economy of an evaporator is influenced by the_____________________?

A. Steam pressure B. Feed temperature C. Number of effect D. Both B. & C....

A hot liquid is kept in a big room. The logarithm of the numerical value of the temperature difference between the liquid and the room is plotted against time. The plot will be very nearly a/an___________________?

A. Ellipse B. Straight line C. Parabola D. Circular arc...

In a heat exchanger, one transfer unit means___________________?

A. A section of the exchanger in which change in temperature of one stream equals the average driving force in the section B. The size of the exchanger in which heat transfer rate is 1 kcal/hr C. Both A. and B. D. None of these...

What is the steam economy in case of a single effect evaporator system ?

A. 1 B. > 1 C. < 1 D. 0.1...