Stefan-Boltzmann law which describes the radiation heat transfer states that, it is proportional to (where, t = temperature in °C T = absolute temperature in ° K) ?

Related Mcqs:

The overall heat transfer co-efficient for a shell and tube heat exchanger for clean surfaces is U0 = 400 W/m2.K. The fouling factor after one year of operation is found to be hd0 = 2000 W/m2.K. The overall heat transfer co-efficient at this time is _____________________?

A. 1200 W/m2.K B. 894 W/m2.K C. 333 W/m2.K D. 287 W/m2.K...

Steam trap is used to_________________?

A. Condense the steam flowing in the pipeline B. Remove water resulting from partial condensation of steam C. Stop the supply of steam D. None of these...

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...

Crystal size in a continuous crystalliser depends upon the___________________?

A. Rate of heat transfer B. Degree of turbulence C. Degree of super-saturation D. All A., B. and C...