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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

2700
10000
21000
2100

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Hydraulics and Fluid Mechanics in ME
The major loss of energy in long pipes is due to

sudden contraction
friction
sudden enlargement
gradual contraction or enlargement

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Hydraulics and Fluid Mechanics in ME
The units of kinematic viscosity are

newton-sec per meter
kg sec/meter
newton-sec per meter
metres² per sec

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is

0.848
0.884
0.392
0.488

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Hydraulics and Fluid Mechanics in ME
The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is

Directly proportional to (radius)4
Directly proportional to (radius)2
Inversely proportional to (radius)4
Inversely proportional to (radius)2

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Hydraulics and Fluid Mechanics in ME
The ratio of absolute viscosity to mass density is known as

kinematic viscosity
coefficient of viscosity
viscosity index
specific viscosity

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