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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be

Steep
First rise and then fall
Nearly horizontal
Horizontal

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Hydraulics and Fluid Mechanics in ME
Which of the following is used to measure the discharge ?

venturimeter
pitot tube
current meter
hotwire anemometer

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Hydraulics and Fluid Mechanics in ME
The major loss of energy in long pipes is due to

gradual contraction or enlargement
friction
sudden enlargement
sudden contraction

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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

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

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Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

All of these
always sloping downward in the direction of flow
never above the energy grade line
always above the centre line of pipe

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Hydraulics and Fluid Mechanics in ME
An air vessel is provided at the summit in a siphon to

Increase discharge
Increase velocity
Maintain pressure difference
Avoid interruption in the flow

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