Heat and Mass Transfer In a shell and tube heat exchanger, baffles are provided on the shell side to Provide support for tubes Improve heat transfer All of these Prevent stagnation of shell side fluid Provide support for tubes Improve heat transfer All of these Prevent stagnation of shell side fluid ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In case of liquids and gases, the heat transfer takes place according to None of these Conduction Radiation Convection None of these Conduction Radiation Convection ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body) k. (dx/dT) k. A. (dT/dx) k. A. (dx/dT) k. (dT/dx) k. (dx/dT) k. A. (dT/dx) k. A. (dx/dT) k. (dT/dx) ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of radiation mainly depends upon the Temperature of the body Type of surface of the body Nature of the body All of these Temperature of the body Type of surface of the body Nature of the body All of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer If the energy radiated per second per sq. cm. of the surface for wave lengths lying between λ, and λ + dλ is represented by (eλ.dλ), then eλ is called None of these Absorptive power Emissivity Emissive power None of these Absorptive power Emissivity Emissive power ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The rate of heat flow through a body is Q = [kA (T₁ - T₂)]/x. The term x/kA is known as Thermal resistance Thermal coefficient Thermal conductivity None of these Thermal resistance Thermal coefficient Thermal conductivity None of these ANSWER DOWNLOAD EXAMIANS APP
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