Fluid Mechanics...

In an orifice meter, coefficient of discharge is 0.58 and coefficient of vena contracta is 0.61, what is coefficient of velocity?

Water is flowing through a pipe with a velocity of 2 m/s at section (1) which is 3 m above the ground and at section (2) with a velocity of 5 m/s which is 0.5 m above the ground. If the pressure at section (1) is 25 kPa & there is energy loss of 0.5 m, what is the pressure at section (2)?

A horizontal venturimeter with inlet diameter 250 mm and throat diameter 100 mm is used to measure the flow of an oil of specific gravity 0.85. The oil-mercury differential manometer shows a reading of 20 cm. The rate of flow of oil (in litres/sec) through the venturimeter is ____ (Take C_d = 0.98)

In a hydro project, a turbine (η = 100) has a head of 50 m and discharge in the feeding penstock is 3 m³/s. If head loss of 5 m take place in penstock, and a power of 1000 kW is extracted, the residual head loss of turbine is______