Heat Transfer In the equation Q = UAΔt; Δt is Geometric mean temperature difference Logarithmic mean temperature difference Arithmetic mean temperature difference The difference of average bulk temperatures of hot and cold fluids Geometric mean temperature difference Logarithmic mean temperature difference Arithmetic mean temperature difference The difference of average bulk temperatures of hot and cold fluids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer One kilogram of water at 0°C is changed to superheated steam of one atm pressure and 300° C. The major heat consumption in the process will be to Heat the water from 0°C to 100°C To superheat the steam Evaporate the water Data insufficient, can Heat the water from 0°C to 100°C To superheat the steam Evaporate the water Data insufficient, can ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is the most widely used heat insulating material for pipelines carrying steam? 85% magnesia cement and glass wool Fireclay refractory followed by aluminium sheet Cotton followed by aluminium foil Tar dolomite bricks followed by asbestos 85% magnesia cement and glass wool Fireclay refractory followed by aluminium sheet Cotton followed by aluminium foil Tar dolomite bricks followed by asbestos ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Graetz number is given by mCp/kμ kL/mCp kμ/mCp mCp/kL mCp/kμ kL/mCp kμ/mCp mCp/kL ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer To reduce the tube side pressure drop for the same flow rate, the heat exchanger recomended is 2-4 heat exchanger 1-2 heat exchanger 1-1 heat exchanger 3-2 heat exchanger 2-4 heat exchanger 1-2 heat exchanger 1-1 heat exchanger 3-2 heat exchanger ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of a vertical tube evaporator, with increase in the liquor level, the __________ is increased. Both A and B Velocity of circulation Neither A and B Liquor-film co-efficient Both A and B Velocity of circulation Neither A and B Liquor-film co-efficient ANSWER DOWNLOAD EXAMIANS APP
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