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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)

Cc/Cr
Cv × Cr
Cc × Cv
Cc × Cr

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Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by

dQ/Q = (1/2) × (dH/H)
dQ/Q = (3/4) × (dH/H)
dQ/Q = (dH/H)
dQ/Q = (3/2) × (dH/H)

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Hydraulics and Fluid Mechanics in ME
Specific speed for reaction turbines ranges from

10 to 100
80 to 200
0 to 4.5
250 to 300

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Hydraulics and Fluid Mechanics in ME
Bernoulli's equation is applied to

Pitot tube
Orifice meter
All of the listed here
Venturimeter

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Hydraulics and Fluid Mechanics in ME
A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be

None of these
10m
100m
1 m

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Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

Francis turbine
None of these
Kaplan turbine
Pelton wheel

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