Hydraulics and Fluid Mechanics in ME
Buoyant force is

The force necessary to maintain equilibrium of a submerged body
The resultant force acting on a floating body
The resultant force on a body due to the fluid surrounding it
Equal to the volume of liquid displaced

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of a reaction turbine, is the ratio of

Actual work available at the turbine to energy imparted to the wheel
None of these
Work-done on the wheel to the energy (or head of water) actually supplied to the turbine
Power produced by the turbine to the energy actually supplied by the turbine

ANSWER DOWNLOAD EXAMIANS APP