Heat Transfer The advantage of backward feed multiple effect evaporators over forward feed units is that Most concentrated liquid is at highest temperature Heat sensitive material can be handled Equal heat transfer co-efficients exist in various effects There is no additional cost of pumping Most concentrated liquid is at highest temperature Heat sensitive material can be handled Equal heat transfer co-efficients exist in various effects There is no additional cost of pumping ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The actual temperature drop across the heating surface of an evaporator depends on the Pressure difference between the steam chest and the vapor space above the boiling liquid Liquid depth over the heating surface All of these Solution being evaporated Pressure difference between the steam chest and the vapor space above the boiling liquid Liquid depth over the heating surface All of these Solution being evaporated ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which is the most suitable for the concentration of foamy & frothy liquors? Long tube vertical evaporator Open pan evaporator Agitated film evaporator None of these Long tube vertical evaporator Open pan evaporator Agitated film evaporator None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the Existence of thermal boundary layer Temperature gradient produced due to density difference None of these Buoyancy of the bubbles produced at active nucleation site Existence of thermal boundary layer Temperature gradient produced due to density difference None of these Buoyancy of the bubbles produced at active nucleation site ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in porosity, the thermal conductivity of a solid substance Increases Remains unchanged Decreases May increase or decrease; depends on the solid Increases Remains unchanged Decreases May increase or decrease; depends on the solid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fouling factor for a heat exchanger is given by (where, U₁ = heat transfer co-efficient of dirty surface U₂ = heat transfer co-efficient of clean surface) U₂ - U₁ U₁ - U₂ 1/U₂ - 1/U₁ 1/U₁ - 1/U₂ U₂ - U₁ U₁ - U₂ 1/U₂ - 1/U₁ 1/U₁ - 1/U₂ ANSWER DOWNLOAD EXAMIANS APP
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