248) A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in higher coefficient of performance.
Answer is:
Agree
Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers
Answer is:
Biot number
Answer is:
the ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body
Explanation:
According to Kirchhoff's law, the ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body.
Answer is: