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Statement 1: Drying is used for preservation of food. Statement 2: Convective drying is indirect drying and conductive drying is direct drying.
200 kg of solids (on dry basis) is subjected to a drying process for a period of 5000 seconds. The drying occurs in the constant rate period with the drying rate as, Nc = 0.5 × 10-3 kg/m2.s. The initial moisture content of the solid is 0.2 kg moisture/kg dry solid. The interfacial area available for drying is 4 m2/1000 kg of dry solid. The moisture content at the end of the drying period is (in kg moisture/kg dry solid)
A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids)
A dryer is used for drying pears which has initial moisture content of 70 % (wet basis) and final moisture content of 5 % (wet basis). An experimental drying curve for the product indicates that the critical moisture content is 25 % (wet basis) and the time for constant drying is 5 min. Can you estimate the total drying time for product?
A fluidized bed combustion system having an output of 35 MW at 80% efficiency when using a coal of heating value 26 MJ/kg with a sulphur content of 3.6% requires a particular limestone to be fed to it at a calcium-sulphur molar ratio of 3.0 so as to limit emissions of SO2 adequately. The limestone used contains 85% CaCO3. The required flow rate of limestone will be
Cabinet/ Tray driers are direct driers.
Read the given statements and conclusions carefully and select which of the conclusions logically follow(s) from the statements. Statements: Some plastics are wool. Some wools are papers. Conclusions: 1. Some plastics are papers 2. Some papers are plastics
In this question, three statements are given followed by two conclusions. Choose the conclusion(s) which best fit(s) logically. Statements: 1) Some soccer are shoes. 2) Some shoes are covers. 3) All covers are plastics. Conclusions: I. Some plastics are shoes. II. Some soccer are plastics.
In the following question below are given two statements followed by two conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some glasses are plastics. II. No glass is metal. Conclusions: I. Some plastics are metal. II. Some plastics are glasses.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: Some handkerchiefs are plastics. All clothes are handkerchiefs. All utensils are clothes. Conclusions: I. Some plastics are handkerchiefs. II. All utensils are plastics. III. Some handkerchiefs are utensils.