The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant ______________ filtration?
Correct answer: C. Both A. & B.
- A. Rate
- B. Pressure
- C. Both A. & B.
- D. Neither A. nor B.
Explanation
Cake thickness and therefore cake resistance grow as filtration proceeds under constant-pressure operation. The same buildup occurs under constant-rate operation, although the pressure must rise to maintain that rate, so both conditions apply.
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