Continuous measurement of specific gravity of a liquid is done by __________________?
Correct answer: C. Both A. and C.
- A. Hydrometer
- B. Contact-type electric indicators
- C. Both A. and C.
- D. Displacement meter
Explanation
A hydrometer determines specific gravity from buoyancy, while a displacement meter can provide an in-line continuous indication based on the displaced force. Both are therefore used for specific-gravity measurement in suitable arrangements.
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