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Chapter 6 - Fluid Dynamics - 2
1.
The maximum drag force on a falling sphere is 9.8N, its weight is:-
a) 4.9N
b) cannot be calculated
c) 9.8N
d) 1N
2.
In laminar flow, adjacent layers of fluid:-
a) Resists each other motion
b) Mix in each other
c) Slide smoothly past each other
d) None of the above
3.
The effect of the decrease in pressure with the increase in speed of the fluid in a horizontal pipe is known as:-
a) Venturi's effect
b) Torriculli's effect
c) Bernoulli's effect
d) Viscosity effect
4.
Human blood pressure is measured in:-
a) Nm
-2
b) Pascal
c) mm
d) Cm
5.
The drag force on a moving body ����� with the increasing velocity.
a) Increases
b) Decreases
c) viscosity
6.
The terminal velocity is inversely proportional to the ...................
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7.
If each particle of a fluid passing through a point follows the same path, then the flow is called .............
a) viscosity
b) Streamline
c) Smooth
8.
If the internal friction force between adjacent layers of fluids is zero, then the fluid is ................
a) viscosity
b) Viscous
c) Non-viscous
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