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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The pressure at a point 4 m below the free surface of water is

49.24 kPa
29.24 kPa
39.24 kPa
19.24 kPa

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Hydraulics and Fluid Mechanics in ME
Casting of a centrifugal pump is designed so as to minimize

Friction loss
Cavitations
Static head
Loss of kinetic energy

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Hydraulics and Fluid Mechanics in ME
Which of the following hydraulic unit is used for transmitting increased or decreased torque to the driven shaft?

Hydraulic intensifier
Hydraulic torque converter
Hydraulic accumulator
Hydraulic ram

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Sixteen times
Four times
Eight times
Double

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Hydraulics and Fluid Mechanics in ME
The flow ratio in case of Francis turbine varies from

0.15 to 0.3
0.4 to 0.5
1 to 1.5
0.6 to 0.9

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Hydraulics and Fluid Mechanics in ME
Puck up the wrong statement about centrifugal pump

Head a speed²
Power a speed⁴
Discharge a diameter
Head a diameter

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