Heat Transfer Which of the following has the minimum thermal conductivity? Tar Steel Carbon black Nitrogen Tar Steel Carbon black Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which type of heat exchanger is preferred for heavy heat loads ? Double pipe Plate fine Series and parallel set of shell and tube None of the listed here Double pipe Plate fine Series and parallel set of shell and tube None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient goes through a maximum. goes through a minimum continues to increase continues to decrease goes through a maximum. goes through a minimum continues to increase continues to decrease ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Finned tube heat exchangers are used for smaller heat load use metal fins of low thermal conductivity facilitate very large temperature drop through tube wall give larger area per tube are used for smaller heat load use metal fins of low thermal conductivity facilitate very large temperature drop through tube wall give larger area per tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Decreases Increases Remains same Decreases linearly Decreases Increases Remains same Decreases linearly ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is Either more or less ; depends on the nature of vapor Some Less More Either more or less ; depends on the nature of vapor Some Less More ANSWER DOWNLOAD EXAMIANS APP
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