Heat Transfer In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is Zero Maximum Infinity Minimum Zero Maximum Infinity Minimum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer According to Reynolds analogy, Stanton number is equal to f/4 f f/2 2f f/4 f f/2 2f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a cooling tower, water becomes cool by Vaporisation due to heat loss to air Heat transfer to surroundings Loosing sensible heat Loosing latent heat Vaporisation due to heat loss to air Heat transfer to surroundings Loosing sensible heat Loosing latent heat ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The number of kg vaporised per kg of steam fed to the evaporator is defined as Capacity Rate of vaporisation Economy Rate of evaporation Capacity Rate of vaporisation Economy Rate of evaporation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in temperature, the total emissivity of conductors Decreases linearly Remains same Decreases Increases Decreases linearly Remains same Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately 45 37 32 50 45 37 32 50 ANSWER DOWNLOAD EXAMIANS APP
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