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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is

4 km
32 km
8 km
20 km

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Hydraulics and Fluid Mechanics in ME
The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is

0.5
0.4
0.8
0.6

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Hydraulics and Fluid Mechanics in ME
Froude's number is the ratio of inertia force to

Surface tension force
Gravity force
Pressure force
Elastic force

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Hydraulics and Fluid Mechanics in ME
A one dimensional flow is one which

takes place in straight lines
involves zero transverse component of flow
is steady uniform flow
is uniform flow

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Hydraulics and Fluid Mechanics in ME
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)

(q/g)1/2
(q⁴/g)1/5
(q³/g)1/4
(q²/g)1/3

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Hydraulics and Fluid Mechanics in ME
If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is

43892
43924
44078
27/8

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