Heat Transfer
In the equation Q = UAΔt; Δt is

The difference of average bulk temperatures of hot and cold fluids
Logarithmic mean temperature difference
Geometric mean temperature difference
Arithmetic mean temperature difference

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the

Condensate is corrosive in nature
Higher condensing film co-efficient is desired
Lower pressure drop through the exchanger is desired
Temperature of the incoming vapor is very high

ANSWER DOWNLOAD EXAMIANS APP