Heat Transfer Absorptivity and refletivity of a perfect black body are respectively 1 and ? 0 and 1 1 and 0 0 and 0.5 1 and ? 0 and 1 1 and 0 0 and 0.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are (COP)R = 1.5; (COP)HP = 2.5 (COP)R = (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 2.5; (COP)HP = 1.5 (COP)R = 1.5; (COP)HP = 2.5 (COP)R = (COP)HP = 2.5 (COP)R = (COP)HP = 0.6 (COP)R = 2.5; (COP)HP = 1.5 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer (NRe.NPr)(D/L) is called the __________ number None of these Graetz Stanton Peclet None of these Graetz Stanton Peclet ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is 3000 4600 4000 9000 3000 4600 4000 9000 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 2000 4000 5000 6000 2000 4000 5000 6000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer 'Duhring's plot' is of use in Leaching Extractive distillation Absorption Evaporation Leaching Extractive distillation Absorption Evaporation ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS