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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Mercury does not wet glass. This is due to property of liquid known as

viscosity
adhesion
cohesion
surface tension

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Hydraulics and Fluid Mechanics in ME
The maximum number of jets generally employed in impulse turbine without jet interference is

12
6
8
4

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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

10 kg
100 kg
1000 kg
1 kg

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Hydraulics and Fluid Mechanics in ME
The atmospheric pressure at sea level is

All of these
760 mm of mercury
10.3 m of water
103 kN/m2

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Hydraulics and Fluid Mechanics in ME
In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.

Equal to
One-third
Three-fourth
Two-third

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Hydraulics and Fluid Mechanics in ME
The bulk modulus of elasticity with increase in pressure

remains constant
increases first upto certain limit and then decreases
decreases
increases

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