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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A Pelton wheel is

Inward flow impulse turbine
Outward flow impulse turbine
Tangential flow impulse turbine
Inward flow reaction turbine

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Hydraulics and Fluid Mechanics in ME
Two pipe systems can be said to be equivalent, when the following quantites are same

length and diameter
friction factor and diameter
flow and length
friction loss and flow

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Hydraulics and Fluid Mechanics in ME
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between

Lift and resultant force
Lift and drag
Drag and resultant force
Lift and tangential force

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Hydraulics and Fluid Mechanics in ME
Euler's equation in the differential form for the motion of liquids is given by

dp/ρ + g.dz + v.dv = 0
ρ.dp - g.dz + v.dv = 0
ρ.dp + g.dz + v.dv = 0
dp/ρ - g.dz + v.dv = 0

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Hydraulics and Fluid Mechanics in ME
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

hot wire anemometer
Venturimeter
pitot tube
rotameter

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Hydraulics and Fluid Mechanics in ME
Air vessels in reciprocating pump are used to

Reduce acceleration to minimum
Increase pump efficiency
Smoothen flow
Save pump from cavitations

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