A . In process heat exchangers, saturated steam is preferred over the superheated steam.
B . In process heat exchangers, saturated steam is preferred over the superheated steam.
C . When a vertical plate is heated in infinite air environmental under natural convection conditions, the velocity profile in air, normal to the plate, exhibits a maximum.
D . A body at 925 K emits an energy of 1.42 x 1011`alpha`W/m2 (`alpha` is the Stefan-Boltzman constant) in the wavelength band between 3 `mu`m to 4 `mu`em. The fraction of this energy in the total energy emitted over the entire wavelength range is qual to emi
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