With increase in temperature, the thermal conductivity of non-metallic amorphous solids_________________?

Related Mcqs:

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______________?

A. Nu = 0.023 Re0.8. Pr0.4 B. Nu = (π/2) Gz C. Nu = (2/π) Gz D. Nu = 2Gz0.5...

A black body does not ____________ radiation?

A. Absorb or emit B. Refract C. Reflect D. Both B. & C....

In a shell and tube heat exchanger, square pitch compared to triangular pitch__________________?

A. Gives a higher shell side pressure drop B. Gives a lower shell side pressure drop C. Can pack more surface area into a shell of given diameter D. None of these...

The maximum heat transfer co-efficient from steam heating will be attained when the steam is_________________?

A. Supersaturated B. Saturated C. Wet D. None of these...

Dropwise condensation is promoted on a/an ______________ surface?

A. Glazed B. Oily C. Coated D. Smooth...