Hydraulics and Fluid Mechanics in ME
In a reaction turbine, the draft tube is used

To transport water to downstream
To run the turbine full
To prevent air to enter the turbine
To increase the head of water by an amount equal to the height of the runner outlet above the tail race

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics and Fluid Mechanics in ME
Surface tension

Decreases with fall in temperature
Is a function of the curvature of the interface
Is also known as capillarity
Acts in the plane of the interface normal to any line in the surface

ANSWER DOWNLOAD EXAMIANS APP