In case of a Rotameter, the density of the float material is _____________ that of the liquid it replaces?
Correct answer: C. More than
- A. Equal to
- B. Less than
- C. More than
- D. Either A. or B.
Explanation
The float must be denser than the liquid so that its weight can overcome buoyancy and allow it to settle, while the upward flow drag balances the remaining force at the measured position. A float less dense than the liquid would tend to rise or float.
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