Heat and Mass Transfer Heat is transferred by all three modes of transfer, viz. conduction, convection and radiation in Steam condenser Electric heater Boiler Refrigerator condenser coils Steam condenser Electric heater Boiler Refrigerator condenser coils ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer A cube at high temperature is immersed in a constant temperature bath. It loses heat from its top, bottom and side surfaces with heat transfer coefficients of h₁, h₂ and h₃ respectively. The average heat transfer coefficient for the cube is 1/h₁ + 1/h₂ + 1/h₃ None of these h₁ + h₂ + h₃ (h₁.h₂.h₃)1/3 1/h₁ + 1/h₂ + 1/h₃ None of these h₁ + h₂ + h₃ (h₁.h₂.h₃)1/3 ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The most commonly used method for the design of duct size is the Equal friction method Static regains method Velocity reduction method Dual or double method Equal friction method Static regains method Velocity reduction method Dual or double method ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In regenerator type heat exchanger, heat transfer takes place by A complete separation between hot and cold fluids Direct mixing of hot and cold fluids Generation of heat again and again Flow of hot and cold fluids alternately over a surface A complete separation between hot and cold fluids Direct mixing of hot and cold fluids Generation of heat again and again Flow of hot and cold fluids alternately over a surface ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Moisture would find its way into insulation by vapour pressure unless it is prevented by A vapour seal High vapour pressure Less thermal conductivity insulator High thickness of insulation A vapour seal High vapour pressure Less thermal conductivity insulator High thickness of insulation ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer When absorptivity (α) = 1, reflectivity (ρ) = 0 and transmissivity (τ) = 0, then the body is said to be a Opaque body White body Black body Grey body Opaque body White body Black body Grey body ANSWER DOWNLOAD EXAMIANS APP
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