Heat Transfer Fourier's law of heat conduction applies to __________ surfaces. Both A and B Neither A and B Isothermal Non-isothermal Both A and B Neither A and B Isothermal Non-isothermal 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 wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body) α T⁴ αT α 1/T Independent of T α T⁴ αT α 1/T Independent of T ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In thermal radiation for a black body (where, ε is emissivity and α is absorptivity) α ≠ 1, ε ≠ 1 α ≠ 1, ε = 1 α = 1; ε ≠ 1 α = 1; ε = 1 α ≠ 1, ε ≠ 1 α ≠ 1, ε = 1 α = 1; ε ≠ 1 α = 1; ε = 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the Solution has an elevation of boiling point None of these Evaporators operate under vacuum Evaporators opreate at atmospheric pressure Solution has an elevation of boiling point None of these Evaporators operate under vacuum Evaporators opreate at atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The sum of reflectivity and absorptivity for an opaque body is equal to 2 0.5 1 2 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
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