Prandtl number for most of dry gases is about________________?

Related Mcqs:

With increase in temperature, the total emissivity of conductors____________________?

A. Increases B. Decreases C. Remain same D. Decreases linearly...

When warm and cold liquids are mixed, the heat transfer is mainly by_______________?

A. Conduction B. Convection C. Radiation D. Both A. & C....

Multipass heat exchangers are used______________________?

A. Because of simplicity of fabrication B. For low heat load C. To obtain higher heat transfer co-efficient and shorter tube D. To reduce the pressure drop...

Nusselt number is the ratio of the ____________________?

A. Temperature gradient of the wall to that across the entire pipe B. Temperature difference to the temperature gradient at the wall C. Heat flux at the wall to that across the entire pipe D. None of these...

The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)?

A. αT B. α × 1/T C. α T4 D. Independent of T...