Statement 1: A hammer mill uses an impact to break particles. Statement 2: A chakki uses compression to break particles.

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Statement 1: For calculating the minimum thickener area, the angle bisector method is used. Statement 2: In the angle bisector method, the point obtained the curve and the corresponding time is the time when the solids enter the compression zone.

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A ball mill uses _____

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Statement 1: Where Pg is power for a gassed system and Po is power for an ungassed system, Pg/Po is _____ Statement 2: Na stands for _____

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Statement 1: Cranes and hoists have an incline up and down option. Statement 2: Trucks can be used for continuous operations.

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Statement 1: Froude number relates the gravitational effect which is important when the liquid is agitated by an impeller. Statement 2: When NRe,i < 300, NFr is ineffective.

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Statement 1: Chain drive rollers move faster than belt driven rollers. Statement 2: Screw conveyors are used in the feeding of raw materials like wheat or chilly into the grinding unit to make a powder out of it.

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Statement 1: Which mixture is used when one of the components is very less in quantity? Statement 2: This mixer is used to mix items in savory or a snack item.

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Statement 1: The g-number is the ratio of the velocity in a centrifuge to that of the velocity in sedimentation. Statement 2: The g-number is represented as Z.

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Statement 1: In a dairy industry, it is desired to obtain the cream from milk using a centrifuge. Which will stay in the center? Statement 2: It is desired to have __________ for the above process.

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Statement 1: Belt conveyors cannot be used in the inclined position. Statement 2: Screw conveyors can carry more amount of load compared to belt conveyors.

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Statement 1: Belt and screw conveyors are in all processing units to transport the final packed cartons. Statement 2: The feeding in most processing units is done by screw feeders or mechanical/oscillatory feeders.

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Statement 1: It is generally not possible to change the direction of flow with belt conveyors. Statement 2: If belt conveyors are to be used in the bent position, slat belts are used.

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Statement 1: Grinding laws are based on the energy required for the creation of new surface area. Statement 2: In general, all the laws are based on the principle that the energy required per unit area of the surface is directly proportional to the size of the particle.

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Statement 1: Effectiveness of mixing in kneaders depends on the blade design. Statement 2: Kneaders have a high clearance between the two oppositely rotating blades and the vessel.

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Statement 1: In both, centrifuge and sedimentation, the terminal velocity of the particle is reached after a certain time. Statement 2: The formula used for finding out the velocity is the same for both the processes.

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Statement 1: As mesh size increases, the aperture size decreases. Statement 2: In British standards, the ratio of the aperture size of two consecutive screens is a ratio of 1.412.

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Statement 1: Root mean square is denoted by σ2 Statement 2: σ2 will show the variation of a composition obtained after mixing. Hence the lesser it is, the more efficient is the mixing.

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Statement 1: Bucket conveyors can be divided into close and spaced bucket conveyors. Statement 2: Bucket conveyors can be divided into centrifugal and positive discharge bucket conveyors.

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Statement 1: Tubular bowl centrifuges can handle slurries. Statement 2: Tubular bowl centrifuges can be used for 3 phase separation.

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Statement 1: For non-Newtonian fluids, another term called apparent viscosity is used as their viscosity changes with the change in the shear rate. Statement 2: For non-Newtonian fluids, between the transition region, the power number for non-Newtonian fluids is slightly higher than that for Newtonian fluids.

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Statement 1: Kneaders are specially used for pastry/viscous liquids in the food industry. Statement 2: Kneaders are used for mixing dough with fats and making them homogeneous mixtures.

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Statement 1: In the transient zone, the power input depends on the density and viscosity of the fluid. Statement 2: In the laminar zone, the power input depends on the density only. It is independent of the viscosity of the fluid.

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Statement 1: The radius of neutral zone depends on the radius of the centrifuge. Statement 2: More is the radius, lesser is the zone of centrifuge.

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Statement 1: Dispersion of one immiscible liquid into another also involves size reduction. Statement 2: Leaching requires size reduction.

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Statement 1: Flat blade/curve blade/arrow head/vaned disc turbines are generally used for gas-liquid mixing. Statement 2: Helical screw/ribbon mixer/gate anchor are generally used for solid-solid mixing.

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