The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

Hydraulics and Fluid Mechanics in ME
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

wx

wA

wAx

wA/x

wx

wA

wAx

wA/x

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Hydraulics and Fluid Mechanics in ME
A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

33.3 kN

3.53 kN

35.3 kN

None of these

33.3 kN

3.53 kN

35.3 kN

None of these

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Hydraulics and Fluid Mechanics in ME
Units of surface tension are

it has no units

energy/unit area

distance

both of the above

it has no units

energy/unit area

distance

both of the above

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Hydraulics and Fluid Mechanics in ME
The speed of sound in a ideal gas varies directly as its

density

temperature

modulus of elasticity

absolute temperature

density

temperature

modulus of elasticity

absolute temperature

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Hydraulics and Fluid Mechanics in ME
If the depth of water in an open channel is less than the critical depth, the flow is called

Turbulent flow

Torrential flow

Critical flow

Tranquil flow

Turbulent flow

Torrential flow

Critical flow

Tranquil flow

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Hydraulics and Fluid Mechanics in ME
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)

2p/sinα

2p/sin (α/2)

p/sinα

p/2sinα

2p/sinα

2p/sin (α/2)

p/sinα

p/2sinα

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

Hydraulics and Fluid Mechanics in ME A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

Hydraulics and Fluid Mechanics in ME Units of surface tension are

Hydraulics and Fluid Mechanics in ME The speed of sound in a ideal gas varies directly as its

Hydraulics and Fluid Mechanics in ME If the depth of water in an open channel is less than the critical depth, the flow is called

Hydraulics and Fluid Mechanics in ME In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)

Hydraulics and Fluid Mechanics in ME
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

Hydraulics and Fluid Mechanics in ME
A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

Hydraulics and Fluid Mechanics in ME
Units of surface tension are

Hydraulics and Fluid Mechanics in ME
The speed of sound in a ideal gas varies directly as its

Hydraulics and Fluid Mechanics in ME
If the depth of water in an open channel is less than the critical depth, the flow is called

Hydraulics and Fluid Mechanics in ME
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)