Which of the following has the highest thermal conductivity ?

Related Mcqs:

Cpμ/K is termed as the ______________ number?

A. Grashoff B. Nusselt C. Prandtl D. Stanton...

Vent pipes are provided in a condenser to ________________?

A. Remove non-condensable gases B. Purge the condenser C. Facilitate easy cleaning of tubes D. None of these...

In a shell and tube heat exchanger, the shell side fluid velocity can‟t be changed by changing the_________________?

A. Tube layout B. Tube diameter C. Tube pitch D. Number of baffles...

Out of the following four assumptions used in the derivation of the equation for LMTD [LMTD = (Δt1 – Δt2)/ln(Δt1/Δt2)], which one is subject to the largest deviation in practice ?

A. Constant overall heat transfer co-efficient. B. Constant rate of fluid flow C. Constant specific heat D. No partial phase change in the system...

Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is________________?

A. Finned tube heat exchanger with air inside and steam outside B. Finned tube heat exchanger with air outside and steam inside C. Shell and tube heat exchanger with air inside tubes and steam on shell side D. Shell and tube heat exchanger with air on shell side and steam inside tubes...