Heat Transfer Analogy between mass and heat transfer is not applicable in case of Viscous heating or chemical reaction Thermal or pressure mass diffusion Same velocity profile or equal eddy diffusivities Both B and C Viscous heating or chemical reaction Thermal or pressure mass diffusion Same velocity profile or equal eddy diffusivities Both B and C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the highest thermal conductivity ? Black Water Silver Air Black Water Silver Air ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be Equal to 45°C More than 45°C Less than 45°C Initially decreases and remains constant thereafter Equal to 45°C More than 45°C Less than 45°C Initially decreases and remains constant thereafter ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equation, (NSt x N2/3Pr) = f/2, is the __________ analogy. Reynolds None of these Colburn Prandtl Reynolds None of these Colburn Prandtl ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The actual temperature drop across the heating surface of an evaporator depends on the All of these Liquid depth over the heating surface Pressure difference between the steam chest and the vapor space above the boiling liquid Solution being evaporated All of these Liquid depth over the heating surface Pressure difference between the steam chest and the vapor space above the boiling liquid Solution being evaporated ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature. Remains unchanged May increase or decrease; depends on the gas Increases Decreases Remains unchanged May increase or decrease; depends on the gas Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
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