Heat Transfer Boiling point elevation of a solution of NaOH Is almost independent of temperature Increases rapidly with temperature rise Both B and C Is almost independent of pressure Is almost independent of temperature Increases rapidly with temperature rise Both B and C Is almost independent of pressure 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 More Some Less Either more or less ; depends on the nature of vapor More Some Less Either more or less ; depends on the nature of vapor ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the Temperature gradient produced due to density difference None of these Buoyancy of the bubbles produced at active nucleation site Existence of thermal boundary layer Temperature gradient produced due to density difference None of these Buoyancy of the bubbles produced at active nucleation site Existence of thermal boundary layer ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer co-efficient in film type condensation is __________ that for dropwise condensation. Greater than Is same as Lower than Half Greater than Is same as Lower than Half ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Maximum heat transfer rate is achieved in __________ flow. Counter-current Co-current Turbulent Laminar Counter-current Co-current Turbulent Laminar ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the lowest Prandtl number? Transformer oil Water Dilute H₂SO₄ Molten sodium (a coolant used in fast breeder reactor) Transformer oil Water Dilute H₂SO₄ Molten sodium (a coolant used in fast breeder reactor) ANSWER DOWNLOAD EXAMIANS APP
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