Heat Transfer Which of the following is the most widely used heat insulating material for pipelines carrying steam? Cotton followed by aluminium foil 85% magnesia cement and glass wool Tar dolomite bricks followed by asbestos Fireclay refractory followed by aluminium sheet Cotton followed by aluminium foil 85% magnesia cement and glass wool Tar dolomite bricks followed by asbestos Fireclay refractory followed by aluminium sheet ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a supercooled solution, which is on the verge of crystallisation, the free energy of the solution as compared to that of the solid is Less More or less; depends on the nature of solution More Same Less More or less; depends on the nature of solution More Same ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of __________ boiling, the bubbles formed on a submerged hot surface get absorbed in the mass of the liquid. Low pressure Pool Nucleate None of these Low pressure Pool Nucleate None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns. 0.38-0.78 100-1000 0.5-50 5-50 0.38-0.78 100-1000 0.5-50 5-50 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall heat transfer co-efficient for cooling of hydrocarbons by water is about 50 -100 Kcal/hr.m².°C 50 -100 BTU/hr. ft.2°F 1000 - 1500 BTU/hr. ft.2°F 50 -100 W/m² . °K 50 -100 Kcal/hr.m².°C 50 -100 BTU/hr. ft.2°F 1000 - 1500 BTU/hr. ft.2°F 50 -100 W/m² . °K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point elevation of a solution of NaOH Is almost independent of temperature Both B and C Increases rapidly with temperature rise Is almost independent of pressure Is almost independent of temperature Both B and C Increases rapidly with temperature rise Is almost independent of pressure ANSWER DOWNLOAD EXAMIANS APP
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