Heat Transfer Vibrations in the tubes of a shell and tube heat exchanger is induced due to the Vibrations transmitted through piping and/or supports due to external reasons All of these Oscillations in the flow of shell/tube sides fluid Flow of fluid on the tube and shell sides Vibrations transmitted through piping and/or supports due to external reasons All of these Oscillations in the flow of shell/tube sides fluid Flow of fluid on the tube and shell sides ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Low thermal conductivity of heat insulating materials is due to its Dense structure High specific heat None of these High proportion of air space Dense structure High specific heat None of these High proportion of air space ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires Less heating surface None of these More space Lower maintenance cost Less heating surface None of these More space Lower maintenance cost ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A body cools down from 75°C to 70°C in 10 minutes. It will cool down from 70° C to 65° C in __________ minutes. 10 Either B or C, depends on the mass of the body >10 10 Either B or C, depends on the mass of the body >10 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of Concentrations Mass transfer co-efficients Activity co-efficients Chemical potentials Concentrations Mass transfer co-efficients Activity co-efficients Chemical potentials ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that Constant temperature gradient exists Material is anisotropic Boundary surfaces are isothermal There is no internal heat generation Constant temperature gradient exists Material is anisotropic Boundary surfaces are isothermal There is no internal heat generation ANSWER DOWNLOAD EXAMIANS APP
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