Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low Grashoff number Prandtl number viscosity thermal conductivity Grashoff number Prandtl number viscosity thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the Higher condensing film co-efficient is desired Temperature of the incoming vapor is very high Lower pressure drop through the exchanger is desired Condensate is corrosive in nature Higher condensing film co-efficient is desired Temperature of the incoming vapor is very high Lower pressure drop through the exchanger is desired Condensate is corrosive in nature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The steam ejector is used to Remove condensate from the steam pipelines Superheat the steam Create vacuum None of these Remove condensate from the steam pipelines Superheat the steam Create vacuum None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface? Interfacial tension Hot surface temperature Liquid viscosity Liquid density Interfacial tension Hot surface temperature Liquid viscosity Liquid density ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is <1 1 Zero >1 <1 1 Zero >1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe? < 0.5 > 0.6 < 0.1 0.5 < 0.5 > 0.6 < 0.1 0.5 ANSWER DOWNLOAD EXAMIANS APP
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