Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature. Remains unchanged May increase or decrease; depends on the gas Decreases Increases Remains unchanged May increase or decrease; depends on the gas Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Peclet number (Pe) is given by Pe = Re.Pr Pe = Nu.Re Pe = Pr/Re Pe = Re/Pr Pe = Re.Pr Pe = Nu.Re Pe = Pr/Re Pe = Re/Pr ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger? Corrosiveness & fouling characteristics Viscosity Pressure Density Corrosiveness & fouling characteristics Viscosity Pressure Density ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be W/m None, A is just a number W/m.k W/m.k² W/m None, A is just a number W/m.k W/m.k² ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which is the most suitable for cold viscous feed? Forward feed Mixed feed Backward feed Parallel feed Forward feed Mixed feed Backward feed Parallel feed ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? At low velocity At high fluid velocity When fluid flows past a smooth surface None of these At low velocity At high fluid velocity When fluid flows past a smooth surface None of these ANSWER DOWNLOAD EXAMIANS APP
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