Heat and Mass Transfer
Which of the following would lead to a reduction in thermal resistance?

All of these
In radiation, increasing the temperature and reducing the emissivity.
In convection, stirring of the fluid and cleaning the heating surface.
In conduction, reduction in the thickness of the material and an increase in thermal conductivity.

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
A steam pipe is to be lined with two layers of insulating materials of different thermal conductivities. For the minimum heat transfer,

One could place either insulation on either side
The better insulation must be put outside
One should take into account the steam temperature before deciding as to which insulation is put where
The better insulation must be put inside

ANSWER DOWNLOAD EXAMIANS APP