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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

specific density
specific weight
specific mass
specific gravity

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Hydraulics & Fluid Mechanics
Two pipe systems are said to be equivalent when

friction factor and length are same in two systems
length and diameter are same in two systems
length of pipe and discharge are same in two systems
head loss and discharge are same in two systems

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Hydraulics & Fluid Mechanics
The surface tension of mercury at normal temperature compared to that of water is

same
more or less depending on size of glass tube
less
more

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Hydraulics & Fluid Mechanics
Coefficient of velocity for Borda’s mouth piece running full is

0.707
0.611
1.00
0.855

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Hydraulics & Fluid Mechanics
In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is

50 M/SEC
22.5 M/SEC
33 M/SEC
40 M/SEC

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Hydraulics & Fluid Mechanics
A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of

4.6 M
4.0 M
4.8 M
4.2 M

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