Heat Transfer Which of the following has maximum thermal conductivity? Tar Coal Iron Nitrogen Tar Coal Iron Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred None of these By heating an intermediate material (like chequor bricks) and then heating the air from this hot material By direct contact of hot flue gas with air Through a metallic wall None of these By heating an intermediate material (like chequor bricks) and then heating the air from this hot material By direct contact of hot flue gas with air Through a metallic wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer co-efficient (h1) for liquids increases with Decreasing Reynolds number Increasing temperature None of these Decreasing temperature Decreasing Reynolds number Increasing temperature None of these Decreasing temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux, as defined in heat flow is analogous to __________ in electricity flow. None of these Resistance Voltage Current None of these Resistance Voltage Current ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A body cools down from 75°C to 70°C in 10 minutes. It will cool down from 70° C to 65° C in __________ minutes. Either B or C, depends on the mass of the body >10 10 Either B or C, depends on the mass of the body >10 10 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer Increases Remains unaffected Decreases Increases exponentially Increases Remains unaffected Decreases Increases exponentially ANSWER DOWNLOAD EXAMIANS APP
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