Film boiling is usually not desired in commercial equipments, because____________________?

Related Mcqs:

During crystallisation, formation of crystal can occur in ______________ solution only?

A. Saturated B. Supersaturated C. Under-saturated D. All A., B. and C....

For an ideal black body______________________?

A. Absorptivity = 1 B. Reflectivity = 1 C. Emissivity = 0 D. Transmissivity = 1...

The actual temperature drop across the heating surface in an evaporator depends on the_________________?

A. Feed B. Depth of liquid over heating surface C. Pressure difference between steam chest and vapour space D. All A., B. and C....

Film boiling occurs at ________________ pressure?

A. Atmospheric B. Sub-atmospheric C. Negative D. Very high...

Heat transfer in the laminar sub-layer in case of a liquid flowing through a pipe, is mostly by__________________?

A. Eddies current B. Conduction C. Convection D. None of these...