Heat Transfer In the equation Q = UAΔt; Δt is The difference of average bulk temperatures of hot and cold fluids Logarithmic mean temperature difference Arithmetic mean temperature difference Geometric mean temperature difference The difference of average bulk temperatures of hot and cold fluids Logarithmic mean temperature difference Arithmetic mean temperature difference Geometric mean temperature difference ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat exchanger tubes are never made of Stainless steel Copper Plain carbon steel Lead Stainless steel Copper Plain carbon steel Lead ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which area is used in case of heat flow by conduction through a cylinder ? Logarithmic mean area None of the listed here Arithmetic mean area Geometric mean area Logarithmic mean area None of the listed here Arithmetic mean area Geometric mean area ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be Less than 45°C Initially decreases and remains constant thereafter Equal to 45°C More than 45°C Less than 45°C Initially decreases and remains constant thereafter Equal to 45°C More than 45°C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Grashoff number is defined as the ratio of the buoyancy to viscous forces buoyancy to surface tension forces buoyancy to inertial forces inertial to viscous forces. buoyancy to viscous forces buoyancy to surface tension forces buoyancy to inertial forces inertial to viscous forces. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Coal dust Aluminium foil Refractory bricks Iron plates Coal dust Aluminium foil Refractory bricks Iron plates ANSWER DOWNLOAD EXAMIANS APP
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