Heat and Mass Transfer The critical radius is the insulation radius at which the resistance to heat flow is None of these Minimum Maximum Zero None of these Minimum Maximum Zero 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. (dT/dx) (dx/dT) (dT/dx) k. k. k. (dx/dT) k. (dT/dx) (dx/dT) (dT/dx) k. k. k. (dx/dT) ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The insulation ability of an insulator with the presence of moisture would Remain unaffected May increase/decrease depending on temperature and thickness of insulation Decrease Increase Remain unaffected May increase/decrease depending on temperature and thickness of insulation Decrease Increase 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 Emissive power Emissivity None of these Absorptive power Emissive power Emissivity ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The amount of radiation mainly depends upon the Nature of the body All of these 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 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Sensible heat is the heat required to Change liquid into vapour Increase the temperature of a liquid of vapour Convert water into steam and superheat it Change vapour into liquid Change liquid into vapour Increase the temperature of a liquid of vapour Convert water into steam and superheat it Change vapour into liquid ANSWER DOWNLOAD EXAMIANS APP
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