If radius of a batch basket centrifuge is halved & the r.p.m. is doubled, then the_________________?
Correct answer: C. Centrifugal force is doubled
- A. Linear speed of the basket is doubled
- B. Linear speed of the basket is halved
- C. Centrifugal force is doubled
- D. Capacity of centrifuge is increased
Explanation
Centrifugal force varies as N²r. Doubling the rotational speed multiplies it by four, while halving the radius multiplies it by one-half, giving a net doubling; the linear speed N r remains unchanged.
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