According to Stefan’s law, the total radiation from a black body per second per unit area is proportional to____________________?

Question: If Prandtl number is greater than the Schmidt number, then the
[A].

thermal boundary layer lies inside the concentration boundary layer.

[B].

concentration boundary layer lies inside the thermal boundary layer.

[C].

thermal & concentration boundary layers are of equal thickness.

[D].

hydrodynamic(i.e., momentum)boundary layer is thicker than the other two.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In case of surface condensers, a straight line is obtained on plotting __________ on an ordinary graph paper.
[A].

1/-0.8

[B].

-0.8

[C].

-2

[D].

1/-2

Answer: Option A

Explanation:

No answer description available for this question.

Question: Film boiling occurs at __________ pressure.
[A].

atmospheric

[B].

sub-atmospheric

[C].

negative

[D].

very high

Answer: Option D

Explanation:

No answer description available for this question.