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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a Kaplan turbine runner, the numbers of blades are generally between

2 to 4
4 to 8
16 to 24
8 to 16

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Hydraulics and Fluid Mechanics in ME
When a plate is immersed in a liquid parallel to the flow, it will be subjected to a pressure __________ that if the same plate is immersed perpendicular to the flow.

Less than
Equal to
None of these
More than

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

Float over fluid
Sink to bottom
Be fully immersed with top surface at fluid surface
Partly immersed

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Hydraulics and Fluid Mechanics in ME
The property of a fluid which enables it to resist tensile stress is known as

adhesion
cohesion
compressibility
surface tension

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Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Q/0.75
1.5 Q
Same quantity of liquid
0.75 Q

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

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

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