GATE CE 2021 Set 2 — Question 59

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NAT+2 / -0MediumVenturimeterFlow MeasurementWater Resources Engineering

Water Resources Engineering → Flow Measurement → Venturimeter

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Question

A venturimeter as shown in the figure (not to scale) is connected to measure the flow of water in a vertical pipe of 20 cm diameter.
A diagram of a vertical venturimeter with a manometer. The pipe has a diameter of 20 cm. The throat diameter is 10 cm. The distance between the inlet and the throat is 30 cm. A mercury manometer is connected between the inlet and the throat, showing a deflection of 15 cm. The specific gravity of mercury is 13.6.

Assume g=9.8 m/s2g = 9.8 \text{ m/s}^2. When the deflection in the mercury manometer is 15 cm, the flow rate (in lps, round off to two decimal places) considering no loss in the venturimeter is ___________
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