A calibrated device for measuring the flow of water in open channel is known as

A. V-notch

B. Parshall flume

C. Watermeter

D. Lactometer

Answer: Option B

Solution(By Examveda Team)

Parshall flume is an open channel flow metering device that was developed to measure the flow of surface waters and irrigation flows. It is a fixed hydraulic structure. It is used to measure volumetric flow rate in industrial discharges, municipal sewer lines, and influent/effluent flows in treatment plants also.