Heat Transfer It is not preferable to use superheated steam in evaporators, because of its very high temperature low film co-efficient high pressure none of the listed here high temperature low film co-efficient high pressure none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A diathermaneous substance __________ the thermal radiation completely. None of these Transmits Absorbs Reflects None of these Transmits Absorbs Reflects ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nucleate boiling is promoted None of these In the absence of agitation On rough surfaces On polished surfaces None of these In the absence of agitation On rough surfaces On polished surfaces ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The interchange factor for radiation heat transfer from surface 'x' to surface 'y' in case of an infinite parallel planes with emis-sivities εx & εy is given by Εx . εy (εx + εy)/(εx + εy - εx . εy) 1/εx + 1/εy Εx + εy Εx . εy (εx + εy)/(εx + εy - εx . εy) 1/εx + 1/εy Εx + εy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is generally considered as opaque surface towards radiations? Liquids Both solids & liquids Solids Gases Liquids Both solids & liquids Solids Gases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Controlling heat transfer film co-efficient is the one, which offers __________ resistance to heat transfer. lower the largest the least no lower the largest the least no ANSWER DOWNLOAD EXAMIANS APP
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