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Fluid Mechanics

Fluid Mechanics
N²Re/NFr is called the __________ number.

Galileo
Archimedes
Euler
Brinkman

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Fluid Mechanics
Two fluids are flowing through two similar pipes of the same diameter. The Reynold's number is same. For the same flow rate if the viscosity of a fluid is reduced to half the value of the first fluid, the pressure drop will

Remain unchanged
Data insufficient to predict relative pressure drop
Increase
Decrease

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Fluid Mechanics
If the head over the triangular notch is doubled, the discharge will increase by __________ times.

5.657
2.828
4
2

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Fluid Mechanics
Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition.

∂/∂s = 0
∂/∂t = constant
∂/∂t = constant
∂/∂t = 0

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Fluid Mechanics
For water, when the pressure increases, the viscosity

First decreases, and then increases
Decreases
Remains constant
Also increases

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Fluid Mechanics
The head loss in turbulent flow in a pipe varies

As velocity
Inversely as the velocity
Inversely as the square of diameter
As (velocity)²

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MORE MCQ ON Fluid Mechanics

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