Heat Transfer Multipass heat exchangers are used Because of simplicity of fabrication To reduce the pressure drop To obtain higher heat transfer co-efficient and shorter tube For low heat load Because of simplicity of fabrication To reduce the pressure drop To obtain higher heat transfer co-efficient and shorter tube For low heat load ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a multiple effect evaporator, the effect of boiling point elevation is to reduce the economy increase the economy reduce the capacity all of the listed here reduce the economy increase the economy reduce the capacity all of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation of steam on cooling surface is promoted An oily surface When both the steam and the tube are clean Only in presence of air None of these An oily surface When both the steam and the tube are clean Only in presence of air None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dietus-Boelter equation cannot be used for molten metals mainly due to its very low thermal conductivity viscosity Grashoff number Prandtl number thermal conductivity viscosity Grashoff number Prandtl number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe ) K/h0 2K/h0 hi/K 2hi/K K/h0 2K/h0 hi/K 2hi/K ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Open pan evaporators are preferred to be used, when the solution to be concentrated is Salty Highly viscous Scaling Corrosive Salty Highly viscous Scaling Corrosive ANSWER DOWNLOAD EXAMIANS APP
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