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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of liquids
relative humidity
specific gravity of gases
specific gravity of solids

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Hydraulics and Fluid Mechanics in ME
A turbine is required to develop 1500 kW at 300 r.p.m. under a head of 150 m. Which of the following turbine should be used?

Francis turbine
Kaplan turbine
Pelton wheel with one nozzle
Pelton wheel with two or more nozzles

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Hydraulics and Fluid Mechanics in ME
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre

Lies above its centre of gravity
Coincides with its centre of gravity
Lies below its centre of gravity
Lies between the centre of buoyancy and centre of gravity

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Hydraulics and Fluid Mechanics in ME
Which of the following meters is not associated with viscosity

Say bolt
Red wood
Orsat
Engler

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Hydraulics and Fluid Mechanics in ME
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

wQ (Hs + Hd)
wQHs
wQ (Hs - Hd)
wQHd

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Hydraulics and Fluid Mechanics in ME
The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is

(waV²/2g) × sin 2θ
(waV/2g) × sin θ
(waV/g) × sin θ
(waV²/g) × sin θ

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