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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The power transmitted through a pipe is (where w = Specific weight in N/m3, and Q = Discharge in m3/s)

w × Q (H - hf)
w × Q × H
w × Q (H + hf)
w × Q × hf

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Hydraulics and Fluid Mechanics in ME
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

μ π³ N² R⁴ /3600 t
μ π³ N² R⁴ /1800 t
μ π³ N² R² /1800 t
μ π³ N² R² /3600 t

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Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

2V/(vr - v)
V/(vr - v)
2V/(vr + v)
V/(vr + v)

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit discharge of wheel is

2.5 m3/s
0.25 m3/s
0.5 m3/s
1.5 m3/s

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Hydraulics and Fluid Mechanics in ME
The depth of center of pressure of an immersed surface, inclined at an angle 'θ' with the liquid surface lies at a distance equal to __________ the center of gravity.

IG sinθ/Ax̅ above
IG sinθ/Ax̅ below
IG sin²θ/Ax̅ below
IG sin²θ/Ax̅ above

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Hydraulics and Fluid Mechanics in ME
The critical depth meter is used to measure

Velocity of flow in an open channel
Depth of channel
Hydraulic jump
Depth of flow in an open channel

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