The bowl of a disk type centrifuge is...

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Question 1 of 205eccefa2bacbc34ba4d47999

The bowl of a disk type centrifuge is dynamically balanced. To maintain the balance of the bowl after it has been disassembled and cleaned, which of the following statements represent the normal practice of re-assembling? See illustration MO-0012.

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🔍 Key Concepts

• Dynamic balance of the bowl and how unequal weight distribution at high RPM affects vibration • Purpose of numbered disks in a centrifuge stack and what those numbers usually indicate (size/position/order) • Effect of changing the number or order of disks on both separation efficiency and mechanical balance

💭 Think About

• Look closely at how the disk stack is shown in the illustration: does it appear to have a defined top and bottom arrangement, or does it look fully interchangeable? • If an engineer wanted to preserve the factory balancing of the bowl after cleaning, which practice would keep the mass distribution exactly as designed? • What would happen to both balance and throughput if someone removed a few disks from the middle of the stack to make the cover fit more easily?

✅ Before You Answer

• Verify whether all disks are marked/numbered by the manufacturer to indicate a required stacking order. • Consider whether a change in disk count (adding/removing any disks) would still be considered "normal practice" on a dynamically balanced, high‑speed rotor. • Ask yourself which options would guarantee the same mass and geometry the manufacturer balanced in the first place.

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