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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

0.3
0.83
0.6
0.4

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Hydraulics and Fluid Mechanics in ME
Alcohol is used in manometers because

It is clearly visible
It has low surface tension
It can provide longer column due to low density
It has low vapour pressure

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Hydraulics and Fluid Mechanics in ME
When the Venturimeter is inclined, then for a given flow it will show __________ reading.

More
Less
Same
None of these

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Hydraulics and Fluid Mechanics in ME
The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.

None of these
Less than
Equal to
More than

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

Surface tension
Adhesion
Viscosity
Cohesion

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Hydraulics and Fluid Mechanics in ME
The discharge in an open channel corresponding to critical depth is

Maximum
None of these
Minimum
Zero

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