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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

9.81 m/sec²
9.75 m/sec²
10 m/sec²
9 m/sec

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Hydraulics and Fluid Mechanics in ME
An average value of coefficient of velocity is

0.76
0.97
0.62
0.84

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Hydraulics and Fluid Mechanics in ME
According to equation of continuity,

a1/v1 = a2/v2
w1v1 = w2v2
a1v1 = a2v2
w1a1 = w2a2

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Hydraulics and Fluid Mechanics in ME
If no resistance is encountered by displacement, such a substance is known as

Gas
Fluid
Water
Ideal fluid

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Hydraulics and Fluid Mechanics in ME
The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

High speed with radial flow at outlet
Medium speed with radial flow at outlet
High speed with axial flow at outlet
Slow speed with radial flow at outlet

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Hydraulics and Fluid Mechanics in ME
Alcohol is used in manometers because

It has low surface tension
It can provide longer column due to low density
It is clearly visible
It has low vapour pressure

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