Heat Transfer Double pipe heat exchangers are used because it occupies less floor area because it is less costly when heat transfer area required is very low when heat transfer area required is very high because it occupies less floor area because it is less costly when heat transfer area required is very low when heat transfer area required is very high ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multipass heat exchangers are used To reduce the pressure drop For low heat load To obtain higher heat transfer co-efficient and shorter tube Because of simplicity of fabrication To reduce the pressure drop For low heat load To obtain higher heat transfer co-efficient and shorter tube Because of simplicity of fabrication ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Increasing the liquor level in the evaporator results in the increase in liquor film co-efficient decreased capacity increased true temperature drop decreased effect of hydrostatic head increase in liquor film co-efficient decreased capacity increased true temperature drop decreased effect of hydrostatic head ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multiple effect evaporation accounts for None of these Steam economy Lower operating costs Investment economy None of these Steam economy Lower operating costs Investment economy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the Sum of all resistances Maximum resistance in the series Average of all resistances Minimum resistance presents in the series Sum of all resistances Maximum resistance in the series Average of all resistances Minimum resistance presents in the series ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Painting the surface white (with aluminium paint) Giving the surface a mirror finish Painting the surface black Roughening the surface Painting the surface white (with aluminium paint) Giving the surface a mirror finish Painting the surface black Roughening the surface ANSWER DOWNLOAD EXAMIANS APP
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