Heat Transfer Indirect contact heat exchangers are preferred over direct contact heat exchangers, because Heat transfer co-efficient are high There is no risk of contamination Cost of equipment is lower There is no mist formation Heat transfer co-efficient are high There is no risk of contamination Cost of equipment is lower There is no mist formation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer What is the absorptivity of a black body? 0.78 0.95 1 0.78 0.95 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Log mean temperature difference (LMTD) cannot be used, if none of the listed here the heat capacity is not constant and there is a phase change. heat transfer co-efficient over the entire heat exchanger is not constant there exists an unsteady state none of the listed here the heat capacity is not constant and there is a phase change. heat transfer co-efficient over the entire heat exchanger is not constant there exists an unsteady state ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe ) K/h0 hi/K 2hi/K 2K/h0 K/h0 hi/K 2hi/K 2K/h0 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The most conducive surface for dropwise condensation to occur is the __________ surface. Smooth Glazed & polished Coated Oily Smooth Glazed & polished Coated Oily ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For what value of Prandtl number, the Col-burn analogy is valid ? 0.6 to 120 1 to 103 0.06 to 120 l to 50 0.6 to 120 1 to 103 0.06 to 120 l to 50 ANSWER DOWNLOAD EXAMIANS APP
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