Heat Transfer In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred By heating an intermediate material (like chequor bricks) and then heating the air from this hot material None of these By direct contact of hot flue gas with air Through a metallic wall By heating an intermediate material (like chequor bricks) and then heating the air from this hot material None of these By direct contact of hot flue gas with air Through a metallic wall 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 Condensate is corrosive in nature Lower pressure drop through the exchanger is desired Temperature of the incoming vapor is very high Higher condensing film co-efficient is desired Condensate is corrosive in nature Lower pressure drop through the exchanger is desired Temperature of the incoming vapor is very high ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as None of these Q ∝ T² Q ∝ T³ Q ∝ T⁴ None of these Q ∝ T² Q ∝ T³ Q ∝ T⁴ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Evaporation by thermocompression results in the Realisation of multiple effect economy in a single effect Both A and B None of these Saving of steam Realisation of multiple effect economy in a single effect Both A and B None of these Saving of steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer efficiency leading of energy conservation in a heat exchanger can be achieved by Enhancing the fluid pumping rate None of these Keeping the heat transfer surface clean Increasing the tube length Enhancing the fluid pumping rate None of these Keeping the heat transfer surface clean Increasing the tube length ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling of milk in an open vessel is an example of __________ boiling. Sub-cooled Saturated nucleate Film None of these Sub-cooled Saturated nucleate Film None of these ANSWER DOWNLOAD EXAMIANS APP
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