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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Flow occurring in a pipeline when a valve is being opened is

laminar
unsteady
steady
vortex

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Hydraulics and Fluid Mechanics in ME
The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston, and N = Speed of crank in r.p.m.)

(L.A.N)/60
(2 L.A.N)/60
2 L.A.N
L.A.N

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Hydraulics and Fluid Mechanics in ME
Piezometer is used to measure

Atmospheric pressure
Pressure in pipe, channels etc
Very low pressures
Difference of pressure between two points

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Hydraulics and Fluid Mechanics in ME
In reaction turbine, draft tube is used

For safety of turbine
To transport water downstream without eddies
To increase flow rate
To convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately

5 mm
30 mm
20 mm
10 mm

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Hydraulics and Fluid Mechanics in ME
A flow in which __________ force is dominating over the viscosity is called turbulent flow.

Inertia
Surface tension
Elastic
Viscous

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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