Heat Transfer Multipass heat exchangers are used Because of simplicity of fabrication For low heat load To reduce the pressure drop To obtain higher heat transfer co-efficient and shorter tube Because of simplicity of fabrication For low heat load To reduce the pressure drop To obtain higher heat transfer co-efficient and shorter tube ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Forced circulation evaporators are normally used for concentrating liquids having Scaling characteristics Both A & B High viscosity Neither A nor B Scaling characteristics Both A & B High viscosity Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In Fourier's law, the proportionality constant is called the Thermal conductivity Stefan-Boltzman constant Heat transfer co-efficient Thermal diffusivity Thermal conductivity Stefan-Boltzman constant Heat transfer co-efficient Thermal diffusivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer While the total emissivity of a perfect black body is unity, the same for a real body is between 0 and 1 0 >1 1 between 0 and 1 0 >1 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For condensation of pure vapors, if the heat transfer co-efficients in filmwise and drop-wise condensation are respectively hf and hd, then hf < hd hf could be greater or smaller than hd hf > hd hf = hd hf < hd hf could be greater or smaller than hd hf > hd hf = hd ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which area is used in case of heat flow by conduction through a cylinder ? None of the listed here Logarithmic mean area Arithmetic mean area Geometric mean area None of the listed here Logarithmic mean area Arithmetic mean area Geometric mean area ANSWER DOWNLOAD EXAMIANS APP
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