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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The ratio of the normal force of jet of water on a plate inclined at an angle of 30° as compared to that when the plate is normal to jet, is

43832
√2
1/√2
1

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Hydraulics and Fluid Mechanics in ME
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?

Hydraulic torque converter
Hydraulic ram
Hydraulic accumulator
Hydraulic intensifier

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Hydraulics and Fluid Mechanics in ME
Maximum impulse will be developed in hydraulic ram when

Waste valve closes suddenly
Supply pipe is short
Ram chamber is large
Supply pipe is long

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Hydraulics and Fluid Mechanics in ME
When the flow parameters at any given instant remain same at every point, then flow is said to be

quasi static
laminar
uniform
steady state

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Hydraulics and Fluid Mechanics in ME
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is

248 r.p.m
24.8 r.p.m.
82.4 r.p.m.
48.2 r.p.m

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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

surface tension
compressibility
adhesion
cohesion

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