Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T⁴ Q ∝ T² None of these Q ∝ T³ Q ∝ T⁴ Q ∝ T² None of these Q ∝ T³ 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 1/T Independent of T α T⁴ αT α 1/T Independent of T α T⁴ αT ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is Some Either more or less ; depends on the nature of vapor Less More Some Either more or less ; depends on the nature of vapor Less More ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivity of a gas at low density, __________ with increase in temperature. Decreases Remains unchanged Increases May increase or decrease; depends on the gas Decreases Remains unchanged Increases May increase or decrease; depends on the gas ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Dropwise condensation occurs on __________ surfaces smooth clean polished contaminated cooling clean and dirt free smooth clean polished contaminated cooling clean and dirt free ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a forward feed multiple effect, the pressure build up will be highest at the inlet of the last effect least at the outlet of the last effect least at the inlet of the first effect highest at the outlet of the last effect highest at the inlet of the last effect least at the outlet of the last effect least at the inlet of the first effect highest at the outlet of the last effect ANSWER DOWNLOAD EXAMIANS APP
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