54) A steam pipe is to be insulated by two insulating materials put over each other. For best results
Answer is:
better insulation should be put over pipe and better one over it
Related Heat transfer MCQ with Answers
Answer is:
ratio of emissive power to absorptive power is maximum for 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:
absorbed
Explanation:
An object that absorbs all radiation falling on it, at all wavelengths, is called a black body. All radiations in a black body are absorbed.
Answer is:
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.