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Online Tests
Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics Online Test MCQs With Answers
Question # 1
The internal pressure of the blood is
Choose an answer
less than the external atmospheric pressure
greater than the external atmospheric pressure
equal to the external atmosphericpressure
none of them
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Question # 2
When weight of an object falling freely becomes equal to the drag force, then the body will move with
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increasing speed
decreasing speed
constant speed
none of them
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Question # 3
At low speeds, the drag force is
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proportional to speed
inversely proportional to speed
not simply proportional to speed
none of them
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Question # 4
The term Brownian movement refers to
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irregular motions of small particles suspended in a fluid
convection currents in a liquid or gas
convection currents in a gas but not in a liquid
the stretching of a body beyond its elastic limit
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Question # 5
Blood has a density
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Equal to water
Greater then water
Lesser then water
None of these
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Question # 6
Bernoulli's equation is based upon law of conversation
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Mass
Momentum
Energy
None of these
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Question # 7
Viscosity of water is ______ that of air but ___ that of plasma.
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More, more
Less, more
Less, less
More, less
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Question # 8
A person standing near the track of a fast moving train has tendency to fall towards it because of
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Vibration due to motion of train
Gravitation force of attraction between person and trains
The high speed of train
Some other effect
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Question # 9
When each particle of the fluid moves along a smoth path, this path is known as
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straight path
smooth path
haphazard path
steamline
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Question # 10
Bernoulli's equation is applicable for
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turbulent flow
streamline flow
both (a) and (b)
all kinds of flows
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Question # 11
When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
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incompressible
compressible
viscous
non viscous
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Question # 12
The unit of viscosity is SI system is:
Choose an answer
Kg
-1
m sec
-1
Kgm
-1
sec
-1
Kg
-1
m
-1
sec
None of these
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Question # 13
At high altitude the blood oozes out of the nose and ear because
Choose an answer
The blood pressure increase at high altitudes
The percentage of oxygen in the air increase
The atmospheric pressure decrease there
The density of blood decrease at high altitudes
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Question # 14
The velocity gained by the fluid in falling through the distance (h
1 - h
2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
Choose an answer
orifices
efflux
fluid
none of them
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Question # 15
According to the Bernoulli's theorem the pressure velocity are
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equal to each other
proportional to each other
inversely proportional to each other
none of them
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Question # 16
Fluids resist force, This property is called
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Stiffness
Strength
Ductility
Elasticity
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