Hydraulics and Fluid Mechanics in ME
A hydraulic accumulator normally consists of

Two coaxial rams and two cylinders
Two cylinders, two rams and a storage device
A cylinder and a ram
A cylinder, a piston, storage tank and control valve

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Hydraulics and Fluid Mechanics in ME
The specific speed of turbine is defined as the speed of a unit

Of such a size that it delivers unit discharge at unit power
Of such a size that it delivers unit discharge at unit head
Of such a size that it produces unit horse power with unit head
Of such a size that it requires unit power per unit head

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Hydraulics and Fluid Mechanics in ME
Buoyant force is

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

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Hydraulics and Fluid Mechanics in ME
If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be

from reservoir A to reservoirs B and C
from reservoir C to reservoirs A and B
unpredictable
from reservoir B to reservoirs C and A

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