Hydraulics and Fluid Mechanics in ME
The function of guide vanes in a reaction turbine is to

Allow the required quantity of water to enter the turbine
Allow the water to flow over them, without forming eddies
Allow the water to enter the runner without shock
All of the listed here

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics and Fluid Mechanics in ME
Cavitation will begin when

the pressure at any location reaches an absolute pressure equal to the saturated vapour pressure of the liquid
pressure is increased
flow is increased
pressure becomes more than critical pressure

ANSWER DOWNLOAD EXAMIANS APP