Which of the following has the minimum thermal conductivity ?

Related Mcqs:

Heat flux, as defined in heat flow is analogous to _______________ in electricity flow?

A. Current B. Voltage C. Resistance D. None of these...

In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is_________________?

A. Linear B. Hyperbolic C. Parabolic D. None of these...

It is not preferable to use superheated steam in evaporators, because of its very_________________?

A. High temperature B. High pressure C. Low film co-efficient D. None of these...

Pick out the correct equation ?

A. jH = (St)(Pr)2/3 = f/2 B. jH = (St)(Pr)1/3 = f/2 C. jH = (St)2/3(Pr) = f/2 D. jH = (St)1/3(Pr) = f/2...

Loss of heat from untagged steam pipe to the ambient air is by __________________?

A. Conduction B. Convection C. Radiation D. All A., B. & C....