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HEAT AND MASS TRANSFER QUIZ

The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is

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The most commonly used method for the design of duct size is the

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According to Wien's law, the wavelength corresponding to maximum energy is proportion to

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Temperature of steam at around 540°C can be measured by

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The process of heat transfer from one particle of the fluid to another by the actual movement of the fluid particles due to difference of density caused by temperature of the particle is known as

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Which of the following property of air does not increase with rise in temperature?

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Heat transfer in liquid and gases takes place by

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In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by

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The automobile radiator is a heat exchanger of

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A cube at high temperature is immersed in a constant temperature bath. It loses heat from its top, bottom and side surfaces with heat transfer coefficients of h₁, h₂ and h₃ respectively. The average heat transfer coefficient for the cube is

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