Differential manometer measures the____________________?
Correct answer: C. Pressure difference between two points
- A. Atmospheric pressure
- B. Sub-atmospheric pressure
- C. Pressure difference between two points
- D. None of these
Explanation
A differential manometer connects two pressure points and indicates their pressure difference through the difference in liquid levels. An ordinary manometer may measure gauge or absolute-related pressure, but the differential type specifically compares two points.
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