Heat Transfer A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides Lower capacity Lower economy Higher economy Both A & B Lower capacity Lower economy Higher economy Both A & B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is 4600 4000 9000 3000 4600 4000 9000 3000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ∝ 1/t ∝ √t Independent of 't' ∝ t ∝ 1/t ∝ √t Independent of 't' ∝ t 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 Roughening the surface Painting the surface black Painting the surface white (with aluminium paint) Giving the surface a mirror finish Roughening the surface Painting the surface black ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A body is called grey if the monochromatic emissivity of the body is Unity Same for all wavelengths Different for all wavelengths Zero Unity Same for all wavelengths Different for all wavelengths Zero ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the highest thermal conductivity ? Water Black Silver Air Water Black Silver Air ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS