Hydraulics and Fluid Mechanics in ME
A differential manometer is used to measure

Atmospheric pressure
Pressure in Venturimeter
Pressure in pipes and channels
Difference of pressures between two points in a pipe

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Hydraulics and Fluid Mechanics in ME
Cavitation will begin when

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

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Hydraulics and Fluid Mechanics in ME
Runaway speed of a hydraulic turbine is

The speed corresponding to maximum overload permissible
The speed at which turbine runner will be damaged
The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
Full load speed

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