A perfect black body is one that_____________?

Related Mcqs:

Which of the following heating methods has maximum power factor ?

A. Arc heating B. Dielectric heating C. Induction heating D. Resistance heating...

The process of heat transfer during the reentry of satellites and missiles, at very high speeds, into earth’s atmosphere is known as_______________?

A. ablation B. radiation C. viscous dissipation D. irradiation...

A non-dimensional number generally associated with natural convection heat transfer is____________?

A. Prandtl number B. Grashoff number C. Pecelet number D. Nusselt number...

In heating the ferromagnetic material by induction heating, heat is produced due to_____________?

A. induced current flow through the charge B. hysteresis loss taking place below curie temperature C. due to hysteresis loss as well as eddy current loss takingplace in the charge D. none of the above factors...

In arc furnace the function of choke is______________?

A. to stabilize the arc B. to imprpve, power factor C. to reduce severity of the surge D. none of the above...