61) The emissivity for a black body is
Answer is:
1
Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers
Answer is:
all of the above
Answer is:
all of these
Explanation:
Free convection flow depends on
* density
* coefficient of viscosity
* gravitational force
Answer is:
above which a liquid will remain a liquid
Explanation:
The critical pressure of a liquid is the pressure above which a liquid will remain a liquid.