For small temperature difference, the heat transfer rate as per Newton’s law of cooling is proportional to (where, Δt = excess temperature) ?

Related Mcqs:

At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe ?

A. 0.5 B. < 0.5 C. > 0.6 D. < 0.1...

Planck’s distribution law is valid for _____________ bodies?

A. Black B. White C. Coloured D. All A., B. & C....

The dimensionless group in mass transfer that is equivalent to Prandtl number in heat transfer is_________________?

A. Nusselt number B. Sherwood number C. Schmidt number D. Stanton number...

Prandtl number is given by__________________?

A. CP μ/a B. hD/k C. CP μ/k D. μ/h CP...

Double pipe heat exchangers are used__________________?

A. When heat transfer area required is very high B. When heat transfer area required is very low, i.e. (100-200 ft2). C. Because it occupies less floor area D. Because it is less costly...