Question

Which of the following device used for the measurement of the flow rate through a circular pipe with the least loss of energy and direct readings?

• A. a notch
• B. a venturimeter
• C. traversing a pitot-static probe
• D. an orifice meter

Answer 1

Answer:

B. a venturimeter

The device used for measuring flow rate through a circular pipe with the least loss of energy and direct readings is a venturimeter, as it has a gradual change in diameter and the flow streamline through it does not have to drastically change direction like in orifice flowmeter, pitot tube or notch.