Heat Transfer Choose the correct equation. Nu = (Re) (Pr) (Gz) Nu = (Pr)(St) Nu = (Re) (Pr) (St) Nu = (Re)(Pr) Nu = (Re) (Pr) (Gz) Nu = (Pr)(St) Nu = (Re) (Pr) (St) Nu = (Re)(Pr) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat waves Can be reflected by a mirror Travel in straight line Both B and C Can not pass through vacuum Can be reflected by a mirror Travel in straight line Both B and C Can not pass through vacuum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ∝ √t ∝ t Independent of 't' ∝ 1/t ∝ √t ∝ t Independent of 't' ∝ 1/t ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a laboratory test run, the rate of drying was found to be 0.5 x 10-3 kg/m².s, when the moisture content reduced from 0.4 to 0.1 on dry basis. The critical moisture content of the material is 0.08 on a dry basis. A tray dryer is used to dry 100 kg (dry basis) of the same material under identical conditions. The surface area of the material is 0.04 m²/kg of dry solid. The time required (in seconds) to reduce the moisture content of the solids from 0.3 to 0.2 (dry basis) is 6000 2000 4000 5000 6000 2000 4000 5000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The steam ejector is used to Remove condensate from the steam pipelines None of these Create vacuum Superheat the steam Remove condensate from the steam pipelines None of these Create vacuum Superheat the steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient goes through a maximum. continues to decrease continues to increase goes through a minimum goes through a maximum. continues to decrease continues to increase goes through a minimum ANSWER DOWNLOAD EXAMIANS APP
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