Heat Transfer Bulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is Uniformly distributed throughout the fluid None of these Mainly confined to a thin film of fluid near the surface In the central core of the fluid Uniformly distributed throughout the fluid None of these Mainly confined to a thin film of fluid near the surface In the central core of the fluid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid Decreases Increases or decreases depending on number of shell passes Increases Remains unchanged Decreases Increases or decreases depending on number of shell passes Increases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Water always boils when its Vapour pressure equals 76 cm of Hg Temperature reaches 100° C Saturated vapour pressure equals the external pressure on its surface Saturated vapour pressure is less than the atmospheric pressure Vapour pressure equals 76 cm of Hg Temperature reaches 100° C Saturated vapour pressure equals the external pressure on its surface Saturated vapour pressure is less than the atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. Decrease Remain unchanged May increase or decrease; depends on the pressure Increase Decrease Remain unchanged May increase or decrease; depends on the pressure Increase ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Rate of heat transfer by vaporisation from pools of water is affected by the Surface tension of water Viscosity of water All of these Nature of heating surface and distribution of bubbles Surface tension of water Viscosity of water All of these Nature of heating surface and distribution of bubbles ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Graetz number is concerned with the mass transfer between a gas and a liquid heat transfer in laminar flow absorption with chemical reaction heat transfer in turbulent flow mass transfer between a gas and a liquid heat transfer in laminar flow absorption with chemical reaction heat transfer in turbulent flow ANSWER DOWNLOAD EXAMIANS APP
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