Pick out the wrong statement pertaining to the rotary dryer ?

Question

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Rotary dryer is suitable for drying sticky material

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Flights (located in the inside shell of rotary dryer) lift the material being dried and shower it

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down through the current of hot air/gases. It extends from the wall to a distance which is about

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8-12% of the inside diameter of shell

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Hold up of a rotary drier is defined as the fraction of the dryer volume occupied by the solid at

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any instant. The best performance for rotary drier is obtained, when the hold up is in the range

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of 0.05 to 0.15

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Recommended peripheral speed of a rotary drier is in the range of 10 to 30 metres/minute

Question #87987