Heat Transfer Rate of heat transfer by vaporisation from pools of water is affected by the 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 Surface tension of water Viscosity of water All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of __________ boiling, the bubbles formed on a submerged hot surface get absorbed in the mass of the liquid. Nucleate None of these Low pressure Pool Nucleate None of these Low pressure Pool ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Circulation pump is located below the evaporater to Avoid cavitation Avoid frequent priming Create more suction head None of these Avoid cavitation Avoid frequent priming Create more suction head None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the equation Q = UAΔt; Δt is Logarithmic mean temperature difference Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference Logarithmic mean temperature difference Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids Arithmetic mean temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A black body does not __________ radiation. Both B & C Reflect Absorb or emit Refract Both B & C Reflect Absorb or emit Refract ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when KA < 0.5kB CPA > CPB CPA < CPB KA>2 kB KA < 0.5kB CPA > CPB CPA < CPB KA>2 kB ANSWER DOWNLOAD EXAMIANS APP
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