Heat Transfer The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) h0/K 2K/h0 K/h0 h0/2K h0/K 2K/h0 K/h0 h0/2K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the thermal conductivity of most liquids Increases Decreases First increases upto a certain temperature and then becomes constant Remains same Increases Decreases First increases upto a certain temperature and then becomes constant Remains same ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in porosity, the thermal conductivity of a solid substance Increases Decreases Remains unchanged May increase or decrease; depends on the solid Increases Decreases Remains unchanged May increase or decrease; depends on the solid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer It is not preferable to use superheated steam in evaporators, because of its very high temperature none of the listed here high pressure low film co-efficient high temperature none of the listed here high pressure low film co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Maximum water velocity in tubes of a 1-2 shell and tube heat exchanger may be around __________ metres/second. 1 20 30 10 1 20 30 10 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When vaporisation takes place directly at the heating surface, it is called nucleate boiling film boiling all of the listed here vapour binding nucleate boiling film boiling all of the listed here vapour binding ANSWER DOWNLOAD EXAMIANS APP
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