Maximum differential pressure in liquid manometer is ______________ psi?
Correct answer: B. 30
- A. 20
- B. 30
- C. 40
- D. 50
Explanation
Liquid manometers are intended for relatively low differential pressures, and their practical maximum is commonly taken as about 30 psi. Higher pressures are normally measured with mechanical or diaphragm-type differential-pressure instruments.
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