Heat Transfer The overall resistance for heat transfer through a series of flat resistance, is the __________ of the resistances. Average Sum Geometric mean Product Average Sum Geometric mean Product ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place From one part of a body to the another part of the same body Both B & C Between two bodies not in physical contact with each other Between two bodies in physical contact with each other From one part of a body to the another part of the same body Both B & C Between two bodies not in physical contact with each other Between two bodies in physical contact with each other 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 Temperature of the incoming vapor is very high Lower pressure drop through the exchanger is desired Higher condensing film co-efficient is desired Condensate is corrosive in nature Temperature of the incoming vapor is very high Lower pressure drop through the exchanger is desired Higher condensing film co-efficient is desired Condensate is corrosive in nature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature. Increases Remains unchanged May increase or decrease; depends on the gas Decreases Increases Remains unchanged May increase or decrease; depends on the gas Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl number for most of dry gases is about 0.001 70 0.72 150 0.001 70 0.72 150 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer jH factor for heat transfer depends upon the __________ number. Reynolds Prandtl Biot Nusselt Reynolds Prandtl Biot Nusselt ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS