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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
Any one of these
9.81 × 10-6 N/mm3

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Hydraulics and Fluid Mechanics in ME
A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to

100 kg
1 kg
10 kg
1000 kg

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Hydraulics and Fluid Mechanics in ME
Choose the wrong statement. Alcohol is used in manometer, because

Its density is less
It provides longer length for a given pressure difference
Its vapour pressure is low
It provides suitable meniscus for the inclined tube

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Hydraulics and Fluid Mechanics in ME
A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is

10 kN/m3
4.5 kN/m3
6 kN/m3
7.5 kN/m3

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Hydraulics and Fluid Mechanics in ME
Piezometer is used to measure

Pressure in pipe, channels etc
Very low pressures
Difference of pressure between two points
Atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The speed 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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