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The rate of radiant energy, which is emitted by a surface at any temperature and in small wavelength is found from the known rate of energy, which under the same condition would be emitted from a black surface by multiplying with the absorptivity. Above enunciation is known as
Q4: Air is best heated with steam in
Q6: Dropwise condensation occurs on _ surfaces.<br>A)Clean and
Q8: The absorptivity of a body is equal
Q9: For temperature below -40°C which one of
Q12: Feature Film<br>A)any film at least one hour
Q18: Extreme Close-Up<br>A)an extreme version of the close
Q36: Black liquor generated during paper manufacture is
Q39: Arithmetic mean area can be used in
Q39: In an air-conditioning plant a cooling tower
Q49: Multiple effect evaporators ar used to<br>A)Increase the