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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than 2
greater than 4
unity
greater than unity

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Hydraulics and Fluid Mechanics in ME
For centrifugal pump impeller, the maximum value of the vane exit angle is

15° to 20°
20° to 25°
10° to 15°
25° to 30°

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Hydraulics and Fluid Mechanics in ME
Pascal-second is the unit of

pressure
surface tension
dynamic viscosity
kinematic viscosity

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Hydraulics and Fluid Mechanics in ME
In axial flow fans and turbines, fluid enters and leaves as follows

Radially, radially
Axially, axially
Axially, radially
Radially, axially

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Hydraulics and Fluid Mechanics in ME
The specific weight of water is 1000 kg/m3

At normal pressure of 760 mm
At mean sea level
At 4°C temperature
All of the listed here

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Hydraulics and Fluid Mechanics in ME
Delivery head of a centrifugal pump is

Inversely proportional to N²
Directly proportional to N
Inversely proportional to N
Directly proportional to N²

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