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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of water in S.I. units is taken as

9.81 × 103 N/m3
9.81 kN/m3
9.81 × 10-6 N/mm3
Any one of these

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is

10 r.p.m.
20 r.p.m.
80 r.p.m.
40 r.p.m.

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Hydraulics and Fluid Mechanics in ME
The volume of a fluid __________ as the pressure increases.

None of these
Remains same
Increases
Decreases

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Hydraulics and Fluid Mechanics in ME
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

0.4
0.5
0.5
0.515

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Hydraulics and Fluid Mechanics in ME
The depth of the centre of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

5.0 m
4.0 m
3.0 m
2.4 m

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Hydraulics and Fluid Mechanics in ME
Indicator diagram of a reciprocating pump is a graph between

Flow vs. speed
Flow vs. swept volume
Pressure vs. speed
Pressure in cylinder vs. swept volume

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